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Posts posted by androidlad

  1. Just now, Ingerson said:

    nonscientific DR comparison between Eterna simulation and F-Log. Mid exposure, then one and two stops up and down. Included waveform.


    No idea how to measure that into numbers, sorry.

    Yeah I understand, just curious about the higher rolling shutter in 50/60P compared to 25P, 16ms/9ms almost 2x. Did you notice that? I though higher framerate usually result in lower rolling shutter.

    Whici DR mode did you use for the comprison? DR mode is now available in video mode like X-H1, Fuji quotes 12 stops DR with DR400 and Eterna.

  2. 1 hour ago, Ingerson said:

    Rolling shutter tests here:

    4k 24p: https://vimeo.com/292103456/f01f36ff9b
    4k 60p: https://vimeo.com/292103784/bae8f67cef
    1080p24: https://vimeo.com/292104075/3cca0aa757
    1080p60: https://vimeo.com/292104319/73eacbf42b
    1080p120 (24fps playback): https://vimeo.com/292104581/7488279a51

    Thanks! Fuji website says 16ms rolling shutter for 4K 60P, cinema5D says 9ms for 4K 25P. Do these numbers align with your own observation?

  3. 1 hour ago, CyclingBen said:

    @androidlad yep, it’s all face tracking. Any other features I can review for you?

    Thanks! I'd love to see a low light ISO test with noise reduction all the way down to -4. Judging from the JPEG performance, X-T3 could potentially retain excellent detail up to 6400.

  4. 4 minutes ago, Andrew Reid said:

    It's full frame but 0.8x crop!

    F1.2 = looks like F0.95 on full frame. But glass can be much cheaper (adapted). Canon FD 85mm F1.2L cost me 600 euro. It's a monster, no vignetting.

    Bear in mind true medium format goes larger than the Fujifilm GFX 50S. My Hasselblad H3D-39II has a even larger sensor so adjust that 0.8x.

    Medium format is also about resolution - both sensor and glass. You can still have a very shallow DOF stopped down at F4, with supreme sharpness compared to a fast lens wide open. On the sensor side, 100MP would be pretty noise on a full frame sensor, without some sort of technological breakthrough.


    Regarding noise, it depends on how you look at the pixel count. On a 1:1 level, the 100MP sensor has identical noise performance as X-T3, it's the same 3.76um photosite architecture, the 100MP one is like four X-T3 sensor stitched together. If you normalise the images to standard 8MP (DxO "print" test method), the 100MP will have at least 3EV more DR in theory.

  5. Just now, Brian Williams said:

    This was posted earlier in the thread, but if you look at his test of FLog converted to Eterna vs Eterna straight out of the camera, the FLog retained way more detail in the highlights, which makes sense. I don't know enough about DR mode to know if it wouldve made a difference here.

    DR400 in Eterna would definitely make a difference, since they both share the same base ISO of 640. I'd think of it as Eterna LUT applied internally.

  6. Just now, CyclingBen said:

    @androidlad no, there really isn’t a reason to unless shooting F-Log.

    What do you mean? Some of the shots have harsh highlight clipping, I think if you used DR400 with Eterna you would have better highlight roll-off. On X-T2 the DR mode isn't available in video mode.

  7. Just now, CyclingBen said:

    Here are some samples that I've been able to take in my limited amount of time at home the last few days.  All shot with the 18-55mm. Most of it is in 4k h.265 10 bit the rest is 120p 10 bit. I did do a touchscreen focus test as requested. I also made sure to put in some annoying stock music ?


     Thanks for the test, did you use DR400 with Eterna? You get about 12 stops of DR.

  8. Again from the senior semicon enginner on Weibo:


    X-T3 uses a Sony sensor, same 3.76um photosite architecture seen on medium format sensor IMX411/IMX461, with BSI, copper interconnect and 16bit ADC. Think of it as a crop from the medium format sensors.

    According to this engineer, Samsung does have a APS-C sensor but it's only recently taped out, 50MP ISOCELL+HD which is equivalent to Sony's Exmor RS, but without the DRAM. 


  9. Looks like 100P/120P on X-T3 went from line-skipping (X-T2/X-H1) to pixel-binning, sharp horizonal lines like the fence are clean unlike X-Trans III. Reasonable amount of detail but definitely not supersampled from the entire 1.29x sensor area.

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