Thread: NAB 2018: Blackmagic Pocket Cinema Camera 4K

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  1. #161  
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    Quote Originally Posted by Jacek Zakowicz View Post
    Zcam E2 crushes this camera off the gate. 1.7 Gb/s(!!??) h265 HEVC? 120FPS @4K? NVidia object tracking included? That's what I'm reading into it- admittedly- they have absolutely horrible communication skills and nobody talks about this camera since nobody understands how advanced it is- and people are afraid of embarrassing themselves -not me ;-) ... That camera is on the next level IMO...
    Haven't seen any footage of this camera, so I could be great or crap... hope time will tell.
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  2. #162  
    Senior Member Jacek Zakowicz's Avatar
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    Just some perspective:
    Mpeg2 19.2 Mbps is the HD broadcast standard.
    Mpeg 4 h264 is 2-4 times more efficient so , theoretically should give close to 4K Broadcast data rate at 20Mbps.
    H265 HEVC is 2-4 times more efficient than Mpeg4 so we are looking close to 8K broadcast standard. This camera is waaaaay beyond there at 1.7Gbps like 100x that.
    I didn't know that was possible today... Of course I may be embarrassing myself here but hey- we are between friends ...
    Trust me- where there is soooo much data coming- the image will be fine....;-)
    Oh and 10Nm processor tech mean super low power draw and heat dissipation....
    Jacek Zakowicz, Optitek-dot-org, jacek2@optitek.org
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  3. #163  
    Quote Originally Posted by Jacek Zakowicz View Post
    Just some perspective:
    Mpeg2 19.2 Mbps is the HD broadcast standard.
    Mpeg 4 h264 is 2-4 times more efficient so , theoretically should give close to 4K Broadcast data rate at 20Mbps.
    H265 HEVC is 2-4 times more efficient than Mpeg4 so we are looking close to 8K broadcast standard. This camera is waaaaay beyond there at 1.7Gbps like 100x that.
    Delivery broadcast data rates are highly compressed and inferior for acquisition.

    There is no "more" than uncompressed raw.
    They state 10 bits for that camera and no raw so likely burnt-in RGB, and this one offers lossless 12 bit raw.
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  4. #164  
    Senior Member Jacek Zakowicz's Avatar
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    Quote Originally Posted by Hrvoje Simic View Post
    There is no "more" than uncompressed raw.
    Actually there is- uncompressed RGB
    Jacek Zakowicz, Optitek-dot-org, jacek2@optitek.org
    Professional Broadcast and Digital Cinema Equipment
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  5. #165  
    Quote Originally Posted by Jacek Zakowicz View Post
    Actually there is- uncompressed RGB
    In numbers only, while wasting space and potential for post.

    This is some serious imaging power in not so serious body.
    4K 12 bit raw with high sensitivity. Now let's see rolling shutter, OLPF, texture, practical DR, signal extremes behaviour and base colour science.
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  6. #166  
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    Quote Originally Posted by Jacek Zakowicz View Post
    Actually there is- uncompressed RGB
    More data but not necessarily more information.
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  7. #167  
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    Hmm... so I am right with the 1.7Gbps. I take 120FPS @4K at this data rate over 60fps 4K raw any day. Who wouldn't ? What else is there that can do that? Under $20k, hell $50K? BTW I think 1.2B colors is enough for humans to see and enjoy- at least for now when we are still on 8bit displays other than editing bays......
    Jacek Zakowicz, Optitek-dot-org, jacek2@optitek.org
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  8. #168  
    Quote Originally Posted by Jacek Zakowicz View Post
    BTW I think 1.2B colors is enough for humans to see and enjoy-
    It may be enough for presentation not acquisition and post because you can get finer tonal sampling and superior post manipulation with greater quantization, then downsample for delivery.
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  9. #169  
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    Of course you do.
    What would you prefer:
    120FPS @4K in 10bit
    or
    120FPS at HD in 12 bit?
    Jacek Zakowicz, Optitek-dot-org, jacek2@optitek.org
    Professional Broadcast and Digital Cinema Equipment
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  10. #170  
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    Quote Originally Posted by Jacek Zakowicz View Post
    Of course you do.
    What would you prefer:
    120FPS @4K in 10bit
    or
    120FPS at HD in 12 bit?
    Non of the above.
    60 fps, 4k, 12 bit is kind of a sweetspot right now.
    Most will be shot in 24, 25 or 30 fps 4k, 12 bit.
    24 fps for the cinematic look and 25 and 30 fps for TV.

    Current UHD Premium is focussed on:

    Image Resolution: 38402160
    Colour Bit Depth: Minimum 10-bit signal
    Colour: BT.2020 colour representation
    High Dynamic Range: SMPTE ST2084 EOTF

    So 12 bits color gives some room to play.
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