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    #41
    Senior Member Samuel H's Avatar
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    Yes, it would be nice if we could measure all the modes, as we did with the GH4 thanks to blazer003.

    My guess would be that 1080p60 FF is skipping half the lines, whereas 1080p60 APS-C is reading everything and doing a bad downsample, and 720p120 APS-C reads half the lines and then does a bad downsample.
    This would mean:
    a7s FF 1080p24: 30.5 ms
    a7s FF 1080p60: 15.8 ms
    a7s APS-C 1080p24 and 1080p60: 19.5 ms
    a7s APS-C 720p120: 9.8 ms

    So far this is just a guess, though


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    #42
    Senior Member Samuel H's Avatar
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    For anyone still wondering about the accuracy of my measurements: they seem to be just fine. I just found this blog where they measure the sensor readout speed of the a7s using some fancy equipment, and the numbers are close enough:

    a7s FF: I said 30.5ms, they say 34ms
    a7s FF: I said 19.5ms, they say "a little less than 20ms"

    (his numbers may be at 3:2, so then a 16:9 crop would be 28.7ms and 16.9ms)
    Last edited by Samuel H; 07-18-2014 at 04:06 AM.


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    #43
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    Do the NX1 Samuel - I'll shoot a test!


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    #44
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    Quote Originally Posted by eddavid View Post
    Do the NX1 Samuel - I'll shoot a test!
    Yes, please! I'm very curious to find the RS figures for this camera. Samuel has the procedure on the first post. I'm sure that if you made the required shots and didn't want to make the calculations yourself, he or someone else would be willing to do it.


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    #45
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    Any measurements on the 7D Mark II and A7 II?


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    #46
    Senior Member Samuel H's Avatar
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    I still have no proper test for the NX1, a7II, or 7DII. I'd love to get them, particularly for the NX1. I have no interest on the 7DII, and same for the a7II unless the IBIS is useful for video (which seemed not to be the case with the original firmware, but may be with the recent update).


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    #47
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    I did a measurement for the NX1 ages ago and posted it on dpreview:

    http://www.dpreview.com/forums/post/54774775

    I haven't done it for hd though.


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    #48
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    I have made a thread showing my NX1 4k measurement in detail here: http://www.dvxuser.com/V6/showthread...er-measurement

    basically
    DCI 4k = 31.25ms readout
    UHD = 33.33ms readout.
    Last edited by Mattoid; 02-10-2015 at 07:15 PM.


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    #49
    Senior Member Samuel H's Avatar
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    Thanks!!

    I ran my own measurements over that same clip and came out real close to your number: 30.6, 31.6 and 31.4ms, for an average of 31.2ms in 4K mode.

    That puts the NX1 at the bottom of the table, but basically tied with my a7S in FF mode.


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    #50
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    I'll submit a 1080p & 4K test with the Nx1 shortly. In 1080p there is very little rolling shutter and I'm curious how it will place on the chart.


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