Thread: 4.6k only 4.6k full sensor readout RAW

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  1. #1 4.6k only 4.6k full sensor readout RAW 
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    Hello,

    The 4.6k camera's only do full sensor read out RAW without windowing on 4.6k resolution. Will there ever be an update where we could read RAW out without windowing on lesser resolutions like 2K.
    As 4.6K RAW is too plenty for me.

    Cheers,
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  2. #2  
    Senior Member shijan's Avatar
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    Recording Formats
    Lossless CinemaDNG RAW, RAW 3:1 and RAW 4:1 with film dynamic range at 4608 x 2592, 4608 x 1920, 4096 x 2304, 4096 x 2160, 3072 x 2560, 2048 x 1152, 2048 x 1080 and 1920 x 1080.
    Apple ProRes 4608 x 2592, 4608 x 1920, 4096 x 2304, 4096 x 2160, 3072 x 2560, 2048 x 1152, 2048 x 1080 and 1920 x 1080 with either film or video dynamic range.
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  3. #3  
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    Yeah but those are windowed, you cannot remove the windowed mode in anything else atm.
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  4. #4  
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    Are you talking about scaling RAW within the sensor? IE, producing a 2K RAW file from the full 4.6k sensor?

    If that's what you mean, then you misunderstand what RAW actually is.
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  5. #5  
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    Quote Originally Posted by trispembo View Post
    Are you talking about scaling RAW within the sensor? IE, producing a 2K RAW file from the full 4.6k sensor?

    If that's what you mean, then you misunderstand what RAW actually is.
    Yeah I could be mistaken, but I thought when I used a red back in the day. And shot in 2K RAW there was no additional crop. But I am not 100%, so you might be right.
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  6. #6  
    Senior Member DPStewart's Avatar
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    To simplify it a bit for this discussion - NO, you cannot have a non-windowed RAW output the way you're asking for it because RAW basically means "Exactly these pixels right off the sensor BEFORE any image processing is done".
    So that would mean that creating a 2k image from a 4.6k sensor using the whole sensor would require the image processing portion to decide which pixels it's going to use and which ones to discard, and then it would employ some method of creating an image from that data.
    This is - generally speaking - the exact opposite of RAW.
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  7. #7  
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    Well, theoretically you could do it, but you wouldn't like the result. Since the Bayer pattern is fixed, you could read every other row and column in blocks of four and store the raw values. But you'll get massive aliasing.

    Only Sony is doing this for their F5 and F55, but you'll need to change the OLPF:
    http://www.xdcam-user.com/2014/05/wh...5-and-pmw-f55/

    And Red is always windowed if you change the resolution.
    Maybe you got mislead by the fact that their SDI or HDMI output used to be HD for all sizes, but that's not RAW.
    Last edited by Nomad; 08-14-2017 at 10:51 PM.
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  8. #8  
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    There's not really any standard that determines what raw must be. Canon's new cinema raw is available in 10 bit and 12 bit, is 12 bit more raw and 10 bit is only rare? Kinefinity has their "Golden Raw" which is binned and recorded to CDNG. I think the more correct question is will there ever be a full sensor readout recorded to a lower resolution CDNG? I'm sure it's possible although what minor gains are to be had over the existing XQ are probably negligible and have been deemed not worth pursuing.
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  9. #9  
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    RAW should normally be done before applying any color matrix or it defeats the purpose. And de-Bayering a Bayer sensor before storage will unnecessarily increase the amount of data.

    These two points seem like reasonable conditions to call some format "raw", if you ask me.

    Of course, with enough computing power there are always options to scale and store in other high-quality formats which still allow room for color grading.
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  10. #10  
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    Thanks guys!
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