Could Ronin 4D be the LOW LIGHT CHAMPION against FX3?!

00:22:22
https://www.youtube.com/watch?v=gzDR1cKpKjQ

Summary

TLDRIn this highly technical episode, the host explores the performance of the DJI Ronin 4D's sensor, specifically the Zenmuse X9, through rigorous testing against high-end cameras like Sony's FX3 and Red's V Raptor. The findings demonstrate that the Ronin 4D's sensor is particularly impressive in low-light scenarios, often surpassing its competitors. Moreover, the video reveals a unique dual-native ISO functionality and exceptional dynamic range, although the sensor struggles with rolling shutter speeds. The Ronin 4D also boasts 9 stops of internal ND filters that show minimal color shifts. Ultimately, the video argues that the sensor deserves more recognition beyond its combination with DJI’s innovative gimbal technology.

Takeaways

  • 📷 Ronin 4D has exceptional low-light performance, outperforming other high-end cameras.
  • 🔍 The Zenmuse X9 sensor features dual native ISOs for better noise control.
  • 🎥 Profound dynamic range with 14+ stops enhances filming quality.
  • 🎞️ Built-in ND filters of up to 9 stops show minimal color shift issues.
  • ❌ Slow rolling shutter compared to rivals like Sony FX3.
  • ⚙️ Full-frame sensor but lacks open gate recording options.
  • 🌗 Emphasizes importance of dynamic range knowledge for scene optimization.
  • 🔗 Recommends modular design for future camera flexibility.
  • 🖥️ Thorough comparison illustrates the need for recognizing the importance of camera sensors.
  • 🧪 The episode is highly detailed and technical.

Timeline

  • 00:00:00 - 00:05:00

    The introduction emphasized that the launch of the DJI Ronin 4D generated significant attention due to its integrated gimbal camera system, overshadowing the sensor's capabilities. The narrator was invited by DJI to test the sensor against other cameras like the FX3 and RED V-Raptor, leading to surprising findings. They discovered the Zenmuse X9 sensor's superior low-light performance, ascending it to be a competitor against renowned cameras despite its trade-offs. The episode promises technical insights into these findings, including the native ISO and dynamic range, while hinting at forthcoming revelations.

  • 00:05:00 - 00:10:00

    The narrator gives an overview of the DJI's Zenmuse X9 sensor specifications, highlighting its full-frame capacity, dual native ISO, and dynamic range. The sensor’s features favor cinematic use, despite lacking open gate or popular aspect modes, relying instead on DCI standards. During initial testing, the narrator experiments with various lighting conditions to understand the sensor's ineffectiveness under certain circumstances. The sensor’s ability to retain detail in high dynamic range scenes remained compelling, indicating remarkable performance in both highlights and shadows under native ISO settings, although under stress in higher ISO conditions.

  • 00:10:00 - 00:15:00

    Investigating the Zenmuse sensor’s ISO performance, the narrator identifies anomalies at ISO settings, revealing that ISO 4000 unexpectedly outperformed ISO 5000 in terms of noise levels. Testing showed discrepancies in the expected native ISO logic, suggesting a possible absence of the second native ISO, yet showcasing resilient performance across various codecs. Comparing against the RED V-Raptor and Sony FX3 highlighted the Zenmuse's noise handling prowess, as both RED and the Ronin 4D maintained competitive noise levels, noticeably outperforming the FX3 in higher ISO ranges.

  • 00:15:00 - 00:22:22

    The video transitions to highlighting areas where Ronin 4D struggles, such as with rolling shutter effects compared to the FX3. However, it exceeds in dynamic range performances, offering smoother highlight roll-offs. Some experimental comparisons revealed the potential misjudging of dynamic range capabilities highlighted by partial clipping issues in competitors. Discussion extended to ND filter effectiveness, showcasing impressive but minimally shifting results in color, leading to Ronin 4D's sensor being seen as holding considerable potential to reshape the market. Suggestions for providing a modular upgrade in future versions were made, emphasizing its potential overshadowed by its gimbal innovation.

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Mind Map

Video Q&A

  • Why was there initially little discussion about the Ronin 4D's sensor?

    Many were focused on the gimbal-camera combo rather than the sensor itself when it first launched.

  • How does the Ronin 4D's sensor perform in low light?

    It surprisingly outperformed its counterparts, Sony's FX3 and Red's V Raptor, in low light conditions.

  • What are some key features of the Zenmuse X9 sensor?

    The Zenmuse X9 sensor has dual native ISOs and offers cinema-grade specs in a mirrorless body.

  • What are the notable specifications of the DJI Ronin 4D?

    It has 14+ stops of dynamic range, 9 stops of built-in ND, and captures ProRes raw internally.

  • What does the video suggest about understanding dynamic range vs ISO on the Ronin 4D?

    The test showed that the Ronin 4D's dynamic range vs ISO is crucial for selecting the best shooting conditions.

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  • 00:00:00
    when the Ronin 4D first came out for a
  • 00:00:02
    very good reason everyone was so focused
  • 00:00:04
    on the Revolutionary gimbal camera combo
  • 00:00:06
    DJI introduced for the first time but
  • 00:00:08
    there was barely any useful information
  • 00:00:09
    about the most important part of the
  • 00:00:11
    camera the sensor so I thought maybe
  • 00:00:13
    there's not much to say about it fast
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    forward one year DJI asked me if I would
  • 00:00:17
    test out its sensor and as I compared it
  • 00:00:19
    against the fx3 and the red V Raptor I
  • 00:00:21
    was blown away by what I saw and was
  • 00:00:23
    shocked that no one thought of giving
  • 00:00:24
    more attention to the bigger elephant in
  • 00:00:26
    the room the zenmuse X9 sensor we all
  • 00:00:30
    know Sony was the queen of low light
  • 00:00:31
    performance for the past couple of years
  • 00:00:32
    but I was really surprised by the way
  • 00:00:34
    the Ronin 14 not only outperformed the
  • 00:00:36
    fx3 in low light but it also played in
  • 00:00:38
    the same field as the big players like
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    the V Raptor in this episode I'll show
  • 00:00:42
    you the tests and comparisons that led
  • 00:00:43
    me to these very objective conclusions
  • 00:00:45
    along with the two major flaws I found
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    at the 4D you know there's no such thing
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    as a perfect camera after all and
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    finally I'll share some very unexpected
  • 00:00:52
    discoveries about the native ISO and
  • 00:00:54
    dynamic range that were very impressive
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    and disappointing at the same time quick
  • 00:00:57
    heads up this episode is extremely
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    technical I tried to simplify my nerdy
  • 00:01:02
    two months of testing but it might still
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    be intense for many filmmakers so clear
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    your minds raise yourselves it's gonna
  • 00:01:07
    be a fun ride
  • 00:01:09
    [Music]
  • 00:01:18
    let's start with a quick rundown of the
  • 00:01:20
    sensor highlights this is dji's own
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    zenmuse X9 they have a 6K and an 8K
  • 00:01:25
    version they just released I'll only be
  • 00:01:27
    talking about the 6K here which I feel
  • 00:01:29
    is a sweet spot between 4K and 8K it's a
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    full-frame sensor with dual native ISO
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    of 800 and 5000 with 14 plus stops of
  • 00:01:37
    dynamic range 9 stops of built-in ND it
  • 00:01:40
    can shoot 24 frames for Cinema
  • 00:01:41
    Productions and Records pro-res raw
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    internally along with a bunch of other
  • 00:01:45
    prores compressions and h.264 you
  • 00:01:48
    probably noticed already how these
  • 00:01:50
    features feel like a step up from the
  • 00:01:51
    typical mirrorless camera you find
  • 00:01:52
    everywhere they're more of a cinema
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    camera kind of specs looking at the full
  • 00:01:56
    frame sensor I was surprised that it
  • 00:01:58
    doesn't have any open gate or 16x9 modes
  • 00:02:01
    all we have was the DCI 17x9 image area
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    also a cinema standard so it seems
  • 00:02:06
    they're positioning it more as a
  • 00:02:08
    dedicated cinema camera or at least a
  • 00:02:10
    mirrorless with Cinema quality and
  • 00:02:11
    features so this 17x9 image area gives
  • 00:02:14
    us a 6K clip maxing out at 48 frames for
  • 00:02:17
    higher speeds it crops to a 239 to 1
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    ratio for up to 60 frames you can still
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    go even higher if you crop the super 35
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    and drop to 4K for up to 96 frames and
  • 00:02:27
    for the final speed boost you guessed it
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    your crafted 239 to 1 for up to 120
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    frames
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    so I went for a casual test drive with
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    the camera to get some First Impressions
  • 00:02:37
    before I dissected I mainly shot in raw
  • 00:02:39
    to get the most honest image the camera
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    can capture before any internal
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    Corrections or denoising are applied I
  • 00:02:45
    shot scenes with high dynamic range and
  • 00:02:46
    different lighting conditions to try to
  • 00:02:48
    find the breaking point of the camera
  • 00:02:50
    here is a strongly backlit shot I just
  • 00:02:52
    applied the official 709 conversion lot
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    and I remember on the monitor the sky
  • 00:02:56
    looked like it was blown out but in post
  • 00:02:58
    the waveform showed the Highlight
  • 00:03:00
    retained all the details this guy didn't
  • 00:03:02
    have much color that day anyway
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    the log image shows you the latitude it
  • 00:03:06
    has in those highlights you can play
  • 00:03:07
    with so these were early promising signs
  • 00:03:10
    on how the d-lock curve is clinging
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    pretty well onto the highlights which
  • 00:03:13
    I'll confirm with you in another control
  • 00:03:15
    test I did but what about the Shadows so
  • 00:03:17
    in this clip you can see a lot of good
  • 00:03:19
    details in the shadow area this might
  • 00:03:21
    seem crushed but it actually has so much
  • 00:03:23
    details you can recover if you lift it
  • 00:03:24
    up a bit and here's the lock to see
  • 00:03:26
    everything the camera captured also
  • 00:03:28
    notice how the Shadows look pretty clean
  • 00:03:30
    this was the native ISO of 800 but still
  • 00:03:32
    the visible noise looked more like film
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    grain to me so I needed to push the
  • 00:03:36
    camera a lot more than that so I went
  • 00:03:38
    for an eye test to see if these clean
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    shadows will translate well in high isos
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    I was pretty much punishing the camera
  • 00:03:43
    in New York's typical bad quality street
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    lights a dp's nightmare in other words
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    to me the image looked pretty good
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    no major color issues even when I
  • 00:03:53
    underexposed the skin I was able to
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    bring it back to life with a minor
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    mid-cone lift
  • 00:03:57
    then up close you can see a very
  • 00:04:00
    reasonable amount of noise keep in mind
  • 00:04:02
    this is wrong the noisiest format in the
  • 00:04:04
    camera since there's no internal
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    denoising applied here here's how it
  • 00:04:08
    would look if I add the denoising pass
  • 00:04:10
    so overall I felt the camera performed
  • 00:04:12
    super well in low light but that didn't
  • 00:04:14
    break the camera still I needed to go
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    for a more controlled stress test and do
  • 00:04:18
    some comparisons with other cameras I'm
  • 00:04:20
    more familiar with which leads us to a
  • 00:04:22
    very interesting Discovery in our next
  • 00:04:23
    topic ISO and low light performance we
  • 00:04:26
    know the camera has two ISO ranges first
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    one starts from 200 all the way up to
  • 00:04:31
    4000 where 800 is the first Native ISO
  • 00:04:33
    then the second native ISO starts at
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    5000 then reaching all the way up to 12
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    800. we all know the logic says the
  • 00:04:40
    higher you go away from the Native the
  • 00:04:42
    noisier the image gets then it would
  • 00:04:44
    reset the noise again at the second
  • 00:04:45
    native ISO to reach the highest nose
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    levels at the maximum of 12 800 with
  • 00:04:50
    that logic a 4000 is the furthest
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    setting from the cleanest 800 native
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    right before switching to the second
  • 00:04:55
    native of 5000 then it should be the
  • 00:04:57
    noisiest in that range but that doesn't
  • 00:05:00
    seem to be the case
  • 00:05:01
    here we have two clips shot at ISO 4000
  • 00:05:04
    and 5000 but zooming into the Shadows
  • 00:05:06
    the 4000 actually looks a bit cleaner
  • 00:05:08
    than 5000. for a final quantifiable
  • 00:05:11
    confirmation I measured the noise levels
  • 00:05:13
    on my denoiser app picked the same spot
  • 00:05:15
    on both and got my confirmation the 4000
  • 00:05:18
    gave me 6.6 noise levels and the 5000
  • 00:05:21
    gave me 7.8 so I took those results to
  • 00:05:23
    my studio to replicate it in a more
  • 00:05:25
    controlled environment I measured the
  • 00:05:27
    noise level in h264 prores Quad 4 and
  • 00:05:29
    prores draw across all ISO settings and
  • 00:05:31
    put them in this graph I'll show the
  • 00:05:33
    actual Clips in a second but the graph
  • 00:05:35
    again confirmed what I just saw ISO 4000
  • 00:05:38
    has lower noise than ISO 5000 with a
  • 00:05:40
    very dramatic dip in the noisy and
  • 00:05:42
    prores 444 and a more subtle one in h264
  • 00:05:45
    which might mean that native ISO is 4000
  • 00:05:48
    not 5000 but if we isolate the Raw
  • 00:05:51
    results there's a subtle dip at 4000 but
  • 00:05:53
    probably not enough to qualify as a
  • 00:05:55
    second native ISO the whole graph looks
  • 00:05:57
    almost linear meaning noise just gets
  • 00:05:59
    worse the higher you go on the iso scale
  • 00:06:01
    at no point it resets in the
  • 00:06:03
    conventional sense we know which could
  • 00:06:05
    mean the camera doesn't really have a
  • 00:06:07
    second native ISO the other good news
  • 00:06:09
    the difference between the lowest and
  • 00:06:11
    highest noise levels is pretty small and
  • 00:06:13
    this is true in all the codecs I
  • 00:06:14
    measured this reminds me of the red V
  • 00:06:16
    Raptor I was never scared of pushing it
  • 00:06:18
    Beyond 10 000 ISO
  • 00:06:20
    if we compare both red and the 4D raw
  • 00:06:23
    formats keep in mind red has a huge
  • 00:06:25
    Advantage being 8K meaning noise is a
  • 00:06:27
    lot smaller in size making it look a lot
  • 00:06:29
    cleaner with that in mind red has a
  • 00:06:31
    lower noise level of 14 at ISO 800 but
  • 00:06:34
    both have the same maximum noise level
  • 00:06:36
    of 65.
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    I need you to remember this number for a
  • 00:06:39
    second because I thought if I bring the
  • 00:06:41
    Sony fx3 to this comparison being the
  • 00:06:44
    most famous low-light monster I was
  • 00:06:45
    expecting it to be a tough Contender and
  • 00:06:47
    maybe even destroy them both but what I
  • 00:06:50
    saw was quite the opposite Sony's noise
  • 00:06:52
    performance is by far worse than both
  • 00:06:54
    cameras it reached all the way up to 187
  • 00:06:57
    at 10 000 ISO then it resets at the
  • 00:06:59
    second native ISO of 12800 at 66 noise
  • 00:07:02
    score but remember both 4D and the
  • 00:07:05
    Raptor max out at 65 at 12 800 ISO
  • 00:07:09
    here's the graph of the three cameras
  • 00:07:10
    together you can see how the fx3 is way
  • 00:07:12
    off the charts that at 10 000 ISO it has
  • 00:07:15
    three times the amount of noise of the
  • 00:07:17
    4D it even had a marginal defeat in the
  • 00:07:19
    Battle of native ISO of 800. the most
  • 00:07:22
    interesting is how both red and the
  • 00:07:24
    Ronin 4D max out their noise levels at
  • 00:07:26
    12 800 which matches Sony's ISO 3200
  • 00:07:29
    score
  • 00:07:30
    okay let's see how that looks like
  • 00:07:32
    shooting side by side first set ISO 3200
  • 00:07:35
    you can already see a bit of noise in
  • 00:07:37
    the Sony as we pick set peep you can
  • 00:07:39
    clearly see the massive difference
  • 00:07:40
    between both this test couldn't be more
  • 00:07:43
    fair for both because this is six ISO
  • 00:07:46
    clicks from both their first Native ISO
  • 00:07:48
    of 800. the nosing can clear all this
  • 00:07:50
    out of course and they look equally good
  • 00:07:53
    now let's max out the 4D at 12 800 and
  • 00:07:56
    keep the fx3 at 3200 based on my control
  • 00:07:59
    tests they should have similar noise
  • 00:08:01
    levels and as expected they do look
  • 00:08:03
    similar that's pretty impressive
  • 00:08:05
    honestly about the 4D once again if we
  • 00:08:07
    apply the nosing on both they look
  • 00:08:09
    equally good
  • 00:08:10
    let's go back to my control test super
  • 00:08:12
    quick this is the scene I shot to test
  • 00:08:14
    noise color and highlight roll-off so at
  • 00:08:17
    800 both are on their native ISO the fx3
  • 00:08:20
    looks a bit softer simply because it's
  • 00:08:21
    4K compared to 6K and the 4D jumping to
  • 00:08:24
    4000 the last stop before 4D flips into
  • 00:08:27
    the second native ISO and fx3 is halfway
  • 00:08:29
    through its second ISO honestly the 4D
  • 00:08:32
    looks pretty good the fx3 is starting to
  • 00:08:34
    struggle already
  • 00:08:35
    at 8 000 4D is holding on pretty good
  • 00:08:38
    fx3 is falling apart 10 000 fx3 is
  • 00:08:42
    pretty much destroyed 12 800 finally fx3
  • 00:08:46
    resets at its second native but noise
  • 00:08:48
    levels look pretty close between them
  • 00:08:50
    for reference here's the red at 12 800
  • 00:08:53
    the noise levels look pretty similar
  • 00:08:55
    only Red's noise look more monochromatic
  • 00:08:57
    which looks better for sure
  • 00:08:59
    also here's the 4d's best and worst
  • 00:09:01
    noise settings at Native 800 and at the
  • 00:09:04
    maximum ISO of 12800 that's what I meant
  • 00:09:06
    when I said the difference is not that
  • 00:09:08
    bad between the first Native and its
  • 00:09:10
    maximum ISO setting
  • 00:09:11
    so let's check those high isos in
  • 00:09:14
    another real-life comparison to check
  • 00:09:15
    once again how things look on skin tones
  • 00:09:17
    I shot in Pro is wrong with both cameras
  • 00:09:20
    side by side matching their white
  • 00:09:22
    balance at 4000 Kelvin to visualize my
  • 00:09:24
    test on the iso scale these are the
  • 00:09:26
    native isos for the 4D even though I
  • 00:09:28
    believe it doesn't have a second native
  • 00:09:30
    but let's play along the fx3 has a
  • 00:09:32
    confirmed native of 800 and 12 800.
  • 00:09:34
    first comparison was at ISO 5000 giving
  • 00:09:37
    the advantage to the 4D then I repeated
  • 00:09:39
    this at ISO 10000 where it's not native
  • 00:09:41
    for either of them but one step before
  • 00:09:43
    the 4D Max is out and also one step
  • 00:09:45
    before the fx3 flips to the second
  • 00:09:47
    native then finally at 12 800 the second
  • 00:09:50
    native for the fx3 and the absolute
  • 00:09:52
    maximum for the 4D giving the advantage
  • 00:09:55
    to the fx3 this time
  • 00:09:57
    starting with 5000 ISO you can clearly
  • 00:10:00
    see how Sony has a warm yellowish tint
  • 00:10:02
    something I've seen a lot in Sony's
  • 00:10:03
    color science in general while the 4D
  • 00:10:05
    looks more neutral so I'll just set Sony
  • 00:10:07
    to 3500 for a more neutral look remember
  • 00:10:10
    this is raw so what I'm doing is not
  • 00:10:12
    affecting the noise in any way also Sony
  • 00:10:14
    looks a bit lifted in the shadows and
  • 00:10:16
    has a nicer highlight roll-off on her
  • 00:10:18
    face so I'll just get them closer to
  • 00:10:19
    each other with a simple curve for both
  • 00:10:21
    as for noise from a distance the 4D
  • 00:10:24
    looks clean and I can already see some
  • 00:10:26
    noise in the fx3 zooming in it's pretty
  • 00:10:29
    clear Sony's not doing well
  • 00:10:31
    then at 10 000 it's much clearer now how
  • 00:10:34
    Sony has a Sandy colored noise texture
  • 00:10:36
    which doesn't look good I tried to
  • 00:10:38
    denoise it and it looks a lot better but
  • 00:10:40
    I struggled to completely remove the
  • 00:10:42
    noise honestly you can still see it
  • 00:10:43
    lurking in the background in front of
  • 00:10:45
    her eyes here while in the 4D it's
  • 00:10:46
    pretty clean also a lot of details were
  • 00:10:49
    already lost in the fx3 look at the hair
  • 00:10:51
    roots for example on both
  • 00:10:53
    you literally see the individual hairs
  • 00:10:55
    in the 4D but the fx3 pretty much lost
  • 00:10:57
    all those details to be fair the 6K
  • 00:11:00
    resolution in the 4D is surely helping
  • 00:11:02
    but to also be fair the noise in the fx3
  • 00:11:05
    was too much to handle I guess that
  • 00:11:07
    debunks the myth about bigger pixels
  • 00:11:09
    means better light sensitivity
  • 00:11:11
    now at 12 800 finally Sony is back to
  • 00:11:13
    the comfort of its second native ISO
  • 00:11:15
    looking a lot cleaner while the 4D as we
  • 00:11:18
    already established still looks good and
  • 00:11:20
    holding on even up close they look
  • 00:11:22
    pretty similar when denoised I guess
  • 00:11:24
    it's clear that the 4D held onto details
  • 00:11:26
    a lot better
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    so bottom line we saw how Sony quickly
  • 00:11:30
    reaches the red zone as early as 3200
  • 00:11:33
    ISO while the 4D never really reached
  • 00:11:35
    any red zones noise just gets worse as
  • 00:11:38
    you go up then I discovered it has a
  • 00:11:40
    subtle reset at 4000 its unofficial
  • 00:11:42
    second native but noise always stayed
  • 00:11:44
    within a very reasonable and manageable
  • 00:11:46
    level all the way up to 12 800 and it's
  • 00:11:48
    funny how at its worst it still looked
  • 00:11:50
    virtually identical to Sony's second
  • 00:11:52
    native ISO of 12800 of course Sony has
  • 00:11:55
    the awesome advantage of going Beyond
  • 00:11:56
    12800 and all the way up to over a
  • 00:11:59
    hundred thousand ISO and in the extended
  • 00:12:01
    mode all the way up to 400 000. now I'm
  • 00:12:04
    actually curious to see how the 4D would
  • 00:12:06
    perform in those crazy isos DJI should
  • 00:12:08
    explore that in future updates so
  • 00:12:11
    shooting with a 4D you can feel pretty
  • 00:12:12
    confident maxing out your ISO while
  • 00:12:15
    shooting with Sony I'd start getting
  • 00:12:16
    worried between 4000 and 10 000 which is
  • 00:12:19
    a pretty common range we use in night
  • 00:12:20
    scenes
  • 00:12:21
    so yeah when it comes to low light
  • 00:12:23
    performance I think it's fair to
  • 00:12:25
    objectively say Ronin 4D destroyed the
  • 00:12:27
    fx3 and I can safely say it's my current
  • 00:12:29
    Queen of low light right after V Raptor
  • 00:12:31
    of course
  • 00:12:32
    moving on to Rolling shutter that's
  • 00:12:34
    where the DJI lost against the fx3 here
  • 00:12:37
    I shot the same vertical line with both
  • 00:12:38
    cameras and superimposed them in this
  • 00:12:40
    shot fx3 is in blue shooting full frame
  • 00:12:43
    at 4K and the 4D is in yellow shooting
  • 00:12:45
    full frame as well but in 6K as I whip
  • 00:12:48
    pen you can see how the DJI has a much
  • 00:12:51
    more skewed angle than the fx3 doing the
  • 00:12:53
    math the fx3 is 2.3 times faster than
  • 00:12:56
    the 4D pretty impressive honestly this
  • 00:12:58
    is on par with Cinema cameras I also
  • 00:13:01
    confirmed the score from cined's more
  • 00:13:02
    scientific test that led to the same
  • 00:13:04
    results so I thought maybe the 6K is was
  • 00:13:06
    slowing down the 4D so I dropped the
  • 00:13:08
    resolution to 4K and even used the super
  • 00:13:11
    35 mode to avoid any internal resizing
  • 00:13:13
    that might affect its performance I left
  • 00:13:15
    everything the same in the fx3 apart
  • 00:13:17
    from cropping it in post to match the
  • 00:13:19
    framing and funny enough the 4D was even
  • 00:13:22
    slower making the fx3 more than two and
  • 00:13:24
    a half times faster than the Ronin 4D
  • 00:13:26
    even if I consider a margin of error in
  • 00:13:28
    my test it won't be that much off so
  • 00:13:31
    this was pretty disappointing thing on
  • 00:13:33
    the 4D front I assume DJI designed this
  • 00:13:35
    camera with the intention to be used
  • 00:13:37
    with the gimbal which would slow down
  • 00:13:38
    your panning motions and hide the
  • 00:13:40
    effects of the Slow Rolling shutter but
  • 00:13:42
    if we take the gimbal out of the
  • 00:13:43
    equation then we're left with a pretty
  • 00:13:45
    slow sensor readout I guess it's fair to
  • 00:13:47
    say Sony destroyed DJI this time and the
  • 00:13:50
    rolling shutter battle
  • 00:13:51
    next comes dynamic range we have two
  • 00:13:54
    important informations you need to look
  • 00:13:55
    for first is the usable dynamic range
  • 00:13:58
    the sensor can register second is the
  • 00:14:00
    dynamic range versus ISO and that's the
  • 00:14:02
    most important one no one seems to
  • 00:14:04
    really pay attention to
  • 00:14:06
    let's start with the usable dynamic
  • 00:14:07
    range DJI claims the 4D can achieve over
  • 00:14:10
    14 stops on its website but always take
  • 00:14:13
    those marketing claim numbers with a
  • 00:14:15
    grain of salt simply because this number
  • 00:14:16
    reflects all Dynamic ranges including
  • 00:14:19
    the unusable ones buried deep under the
  • 00:14:21
    noise floor and that's usually one to
  • 00:14:23
    three stops above the usable range that
  • 00:14:24
    we care about some other brands probably
  • 00:14:27
    include some of the partially clipped
  • 00:14:28
    range in the highlights as well I'll
  • 00:14:30
    explain it and show you an example in a
  • 00:14:32
    second this is the synedes MS chart for
  • 00:14:34
    the 4D in its native ISO 800 and you can
  • 00:14:37
    see how we have 12 usable stops maybe 13
  • 00:14:39
    if we denoise it the test readings for a
  • 00:14:42
    usable image says 12.4 pretty good by
  • 00:14:45
    today's standards anyway
  • 00:14:46
    let's compare this to some of the
  • 00:14:48
    popular cameras out there here I'm
  • 00:14:50
    showing the camera's official claims in
  • 00:14:51
    red versus the lab tested usable dynamic
  • 00:14:54
    range in blue you can see how Sony and
  • 00:14:56
    red both famous for over hyping their
  • 00:14:58
    camera specs they exaggerated their
  • 00:15:00
    dynamic range claims by 2 and 3 stops
  • 00:15:02
    above the usable score so you always
  • 00:15:04
    need to take their claims with a bigger
  • 00:15:06
    grain of salt than others Blackmagic and
  • 00:15:08
    djis were more conservative in their
  • 00:15:10
    claims with less than two stops above
  • 00:15:11
    the usable then the most honest of them
  • 00:15:13
    all is none other than Ari their claim
  • 00:15:16
    is only half a stop off I guess you
  • 00:15:18
    don't really need to overhype your
  • 00:15:19
    camera when you've set the highest
  • 00:15:21
    quality bar for everyone else
  • 00:15:23
    now I found another small Discovery
  • 00:15:25
    between the fx3 and the 4D even though
  • 00:15:27
    they share the same usable dynamic range
  • 00:15:29
    score the 4D seems to perform better in
  • 00:15:31
    my test I shot the same scene and placed
  • 00:15:34
    this white card with a light shining at
  • 00:15:36
    its bottom to see how both cameras
  • 00:15:37
    render light roll off and check the
  • 00:15:39
    clipping point on each
  • 00:15:41
    side by side both look good but probably
  • 00:15:43
    you can't see the fx3 has some partial
  • 00:15:45
    clipping here you can see it better in
  • 00:15:47
    the waveform
  • 00:15:48
    the blue Channel seems okay but if you
  • 00:15:51
    look closely at the green and red
  • 00:15:52
    channels you can see some clipping
  • 00:15:54
    happening and that's what I meant
  • 00:15:55
    earlier when I said partially clipped
  • 00:15:58
    back to the Ronin 4D all channels have a
  • 00:16:01
    nice roll-off curve in the highlights I
  • 00:16:03
    thought maybe the lot caused this so I
  • 00:16:04
    went back to the lock Clips right out of
  • 00:16:06
    the camera but it's way more obvious now
  • 00:16:08
    how the fx3 clearly clipped with a solid
  • 00:16:11
    Flat Line in both red and green channels
  • 00:16:13
    while the 4D has a super smooth slope
  • 00:16:16
    across all channels so this dynamic
  • 00:16:18
    range probably picked up on the
  • 00:16:20
    information from the blue Channel and
  • 00:16:21
    considered it as part of the fx3's 12.4
  • 00:16:23
    dynamic range score when it really
  • 00:16:25
    shouldn't just because of the missing
  • 00:16:27
    information from both red and green
  • 00:16:28
    channels I could be wrong I wish I have
  • 00:16:31
    the proper testing equipment to conduct
  • 00:16:32
    my own test and conclude this
  • 00:16:34
    here's another interesting Discovery
  • 00:16:36
    this is the red V Raptor under the same
  • 00:16:38
    conditions lock footage without any Luts
  • 00:16:40
    of course there's no clipping whatsoever
  • 00:16:42
    but check the waveforms side by side
  • 00:16:44
    remember how the 4ds Highlight roll-off
  • 00:16:47
    curves look super round and smooth
  • 00:16:48
    basically the more it looks like a
  • 00:16:50
    quarter round or oval the better and
  • 00:16:52
    smoother the Highlight roll-off will be
  • 00:16:54
    have a look at the ones from Red you can
  • 00:16:56
    see how they're a bit inconsistent not
  • 00:16:58
    as smooth and look a bit bumpy in some
  • 00:17:00
    points I might be splitting hairs here
  • 00:17:02
    but these are some small things that
  • 00:17:04
    might make a huge difference in some
  • 00:17:06
    cases with specular highlights
  • 00:17:08
    now we already established the 4d's
  • 00:17:10
    usable dynamic range is not 14 plus
  • 00:17:12
    stops but 12.4 instead but the camera
  • 00:17:15
    cannot sustain this dynamic range across
  • 00:17:17
    all ISO settings that's why if you
  • 00:17:19
    scroll further down on the website
  • 00:17:21
    you'll find the sensor's dynamic range
  • 00:17:23
    performance chart across ISO settings
  • 00:17:24
    that's what I referred to earlier as
  • 00:17:26
    dynamic range versus ISO this graph will
  • 00:17:29
    show you how you might be doing it all
  • 00:17:31
    wrong it will prove how increasing your
  • 00:17:33
    ISO when it's dark might not be the best
  • 00:17:35
    practice to get the best results out of
  • 00:17:37
    this sensor let me show you what I mean
  • 00:17:39
    so the chart gives you two very useful
  • 00:17:41
    informations first is how much dynamic
  • 00:17:44
    range you get from each corresponding
  • 00:17:45
    ISO setting so ISO 3200 and 12800 have
  • 00:17:48
    the lowest dynamic range so you should
  • 00:17:50
    avoid them as much as you can
  • 00:17:52
    while 400 and 800 give you the maximum
  • 00:17:54
    dynamic range possible which we know now
  • 00:17:56
    is actually 12.4 but the second crucial
  • 00:17:59
    information you get is the distribution
  • 00:18:01
    of that dynamic range across highlights
  • 00:18:03
    and shadows it's very important to know
  • 00:18:05
    because sometimes it's counterintuitive
  • 00:18:07
    and might not make any sense to what
  • 00:18:09
    we're used to here's a funny example ISO
  • 00:18:12
    200 is the worst for daytime or sunny
  • 00:18:14
    outdoor because of having only 5 stops
  • 00:18:16
    in the highlights but it's best for
  • 00:18:18
    shadow details because of its 9 stops
  • 00:18:20
    below so if you're shooting a daytime
  • 00:18:22
    scene you better not set it to 200 but
  • 00:18:24
    instead use a strong ND and shift to one
  • 00:18:26
    of these that have the highest highlight
  • 00:18:28
    range
  • 00:18:29
    same goes to 12800 it will only give you
  • 00:18:31
    6 stops in the shadows three full stops
  • 00:18:34
    lower than ISO 200 so it's by far the
  • 00:18:36
    worst choice for dark scenes I guess you
  • 00:18:39
    get my point on why this strut will help
  • 00:18:40
    you with some very counter-intuitive
  • 00:18:42
    decisions
  • 00:18:43
    moving on to the internal ND quality the
  • 00:18:45
    Ronin 4D gave us an impressive nine
  • 00:18:48
    consecutive stops of full spectrum ND
  • 00:18:50
    filters that's the maximum internal ND
  • 00:18:52
    system range I've seen so far so these 9
  • 00:18:55
    stops are 6 small stops than the
  • 00:18:57
    Blackmagic 6K Pro and even the brand new
  • 00:18:59
    state-of-the-art Alexa 35 both having
  • 00:19:02
    only two four and six stops of ND and
  • 00:19:04
    that's also 3 more stops than the Sony
  • 00:19:06
    fx6 and the brand new red V Raptor XL
  • 00:19:09
    but these have the advantage of using
  • 00:19:11
    the more advanced electronic ND system
  • 00:19:13
    unlike the Rune in 4d's fully mechanical
  • 00:19:15
    one I measured half a second to cycle
  • 00:19:17
    between each of these nine stops as they
  • 00:19:19
    shift up and down or stack on top of
  • 00:19:21
    each other and that's when I had some
  • 00:19:23
    concerns since the more you stack
  • 00:19:25
    filters and the higher you go with your
  • 00:19:26
    ND stops density the higher the risk of
  • 00:19:28
    introducing undesired color shifts and
  • 00:19:31
    all we care about in any neutral density
  • 00:19:33
    filter is to be as color neutral as
  • 00:19:35
    possible I learned this lesson when I
  • 00:19:37
    discovered in my episode about the
  • 00:19:39
    pocket 6K Pro how it shifted colors to
  • 00:19:41
    Blue in all its ND stops with an extra
  • 00:19:43
    blue shift in nd6
  • 00:19:45
    so to test the ronin's and the color
  • 00:19:47
    accuracy and consistency I use the
  • 00:19:49
    highest quality light I have the solar
  • 00:19:52
    30C it has an impressive SSI score of 90
  • 00:19:55
    at 3200 Kelvin looking virtually
  • 00:19:57
    indistinguishable from real function
  • 00:19:58
    light so I shot a color chart first with
  • 00:20:01
    a clear ND took a snapshot of its Vector
  • 00:20:04
    scope then did the same thing with all
  • 00:20:06
    nine ND filters and finally compare them
  • 00:20:08
    all to the first one with the clear ND
  • 00:20:10
    once again the results were impressive
  • 00:20:12
    with a couple of subtle but expected
  • 00:20:14
    shifts at higher stops so from stops one
  • 00:20:16
    to six they're pretty clean then 7 to 9
  • 00:20:19
    had a subtle green shift where the
  • 00:20:21
    non-stop has some extra green to show
  • 00:20:23
    you what I mean here's how the clear
  • 00:20:25
    reference looks like I want you to focus
  • 00:20:27
    on the vectorscope center dot here
  • 00:20:28
    showing a neutral color when it's dead
  • 00:20:30
    center in the graticule now when I shift
  • 00:20:32
    to the 7th stop did you notice this
  • 00:20:34
    subtle shift towards the green vector
  • 00:20:36
    let me toggle between them again
  • 00:20:38
    it's pretty subtle but it's there you
  • 00:20:41
    can also see it in the chart of course
  • 00:20:43
    then if I bring the 9th stop once again
  • 00:20:45
    let me toggle between them
  • 00:20:48
    you can see a stronger shift this time
  • 00:20:51
    so maybe avoid using those ND ranges if
  • 00:20:53
    you're shooting a green screen
  • 00:20:54
    but again these are very manageable
  • 00:20:56
    shifts all within an acceptable range
  • 00:20:58
    I'm personally happy and mostly
  • 00:21:00
    impressed how they managed to squeeze 9
  • 00:21:02
    stops of filtration with such a minimal
  • 00:21:04
    amount of color shifts considering how
  • 00:21:06
    hard it is to restrict it in such high
  • 00:21:08
    and defectors I have many other tests
  • 00:21:11
    and results that cover more aspects of
  • 00:21:12
    the sensor but that can take another
  • 00:21:14
    hour
  • 00:21:15
    so to summarize I believe the Zen music
  • 00:21:17
    X9 is a high-end sensor even with its
  • 00:21:20
    drawbacks it has great potential to
  • 00:21:22
    overtake the mirrorless Market I showed
  • 00:21:24
    you how it was on par with Hollywood
  • 00:21:25
    level Cinema cameras such as the V
  • 00:21:26
    Raptor but the sensor's glory moment was
  • 00:21:29
    overshadowed by the Revolutionary gimbal
  • 00:21:31
    camera hybrid everyone was talking about
  • 00:21:33
    which by all means is yet another
  • 00:21:35
    awesome once in a decade Innovation by
  • 00:21:37
    itself but I feel the sensor still needs
  • 00:21:39
    its 15 minutes of fame so here's my two
  • 00:21:42
    cents to DJI for their r d of the new
  • 00:21:44
    Ronin 4D Mark II create a modular system
  • 00:21:47
    that splits the camera into three
  • 00:21:48
    interchangeable parts the sensor the
  • 00:21:51
    Gimbal and the Brain where the gimbal
  • 00:21:52
    part is detachable to let you attach the
  • 00:21:55
    sensor directly to the body in a super
  • 00:21:57
    sturdy way which will solve the biggest
  • 00:21:59
    issue with this camera and that's
  • 00:22:01
    finally being able to mount Cinema
  • 00:22:02
    lenses or any other oversized heavy
  • 00:22:04
    lenses without the need for any sort of
  • 00:22:06
    convoluted Contraptions or cages so
  • 00:22:09
    until that happens I invite you and all
  • 00:22:11
    YouTubers to forget about the gimbal for
  • 00:22:12
    a moment and pay more attention to the
  • 00:22:14
    equally massive thing about the Ronin 4D
  • 00:22:17
    the sensor
  • 00:22:20
    [Music]
Tags
  • Ronin 4D
  • sensor
  • Zenmuse X9
  • low light performance
  • dynamic range
  • ISO
  • ND filters
  • gimbal
  • camera comparison
  • rolling shutter