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Type: Posts; User: Graeme Nattress

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    Lower the ISO, the more DR in the shadows (vs...

    Lower the ISO, the more DR in the shadows (vs highlights). Higher the ISO you build in more highlight protection. So using LL mode will start with the sensor giving you lower noise in the shadows, so...
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    Within a mode, DR is constant regardless of ISO....

    Within a mode, DR is constant regardless of ISO. When you change ISO you're just changing the distribution of below and above stops.

    Graeme
  3. I'd guess with that difference, one has the OLPF...

    I'd guess with that difference, one has the OLPF menu set incorrectly. Check the installed OLPF and settings.

    Graeme
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    When you select the ISO, you can edit the list of...

    When you select the ISO, you can edit the list of ISOs that appear in that list. Just add ISO800 and you're good.

    Graeme
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    So yes, I found this the other day with some...

    So yes, I found this the other day with some material I'd shot and the Resolve downsample was sub-optimal. When I looked at my R3Ds there was no regular grid pattern. But... downsampling is Resolve...
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    If there's a repetitive grid chances are it's a...

    If there's a repetitive grid chances are it's a downsampling issue. What tool did you use to downsample the Monster 8k down??

    Graeme
  7. RLF and Log3G10 put mid grey at a different...

    RLF and Log3G10 put mid grey at a different point. Mid grey on Log3G10 is lower so that the curve can have a lot more highlight protection.

    Graeme
  8. I find l/ph very confusing myself. I like nice...

    I find l/ph very confusing myself. I like nice unambiguous linear resolution and find it's so easy to make mistakes (as I did above) in converting between them.

    Graeme
  9. Yes David - I found in the article where they...

    Yes David - I found in the article where they fill 11.33mm for the vertical height. So that's 2100l/ph where the height is 11.33, making horizontal resolution on the neg higher than I said earlier...
  10. Through the whole chain - starting with the...

    Through the whole chain - starting with the negative, which they measured. Has film negative stock for acquisition doubled in resolution since 2006?

    Graeme
  11. I was going with:...

    I was going with: http://www.motionfx.gr/files/35mm_resolution_english.pdf for the numbers.

    Graeme
  12. But a 4k scan of 35mm film isn't the same as a 4k...

    But a 4k scan of 35mm film isn't the same as a 4k rendered CGI image.... MTF of 35mm motion picture negative gives maybe 2100 l/ph for 10% MTF or maybe max limiting resolution of 2400l/ph which for...
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    Paul, it's not so much about mathematical loss...

    Paul, it's not so much about mathematical loss but precision. We go from RAW to ACES via: matrix -> high precision math curve. All the precision is very high and the results excellent. IDTs are more...
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    AFAIK Resolve correctly decodes an AP0/Linear...

    AFAIK Resolve correctly decodes an AP0/Linear Light image when it requests it from the SDK.

    To debug Geoff's issue I'll need a good description of what Resolve settings were used. Whenever I've...
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    Sure Resolve supports ACES and RED. Resolve just...

    Sure Resolve supports ACES and RED. Resolve just asks the R3D SDK for "ACES" and it is given AP0/Linear Light. There's no need for an IDT as that would just reduce quality because all an IDT does is...
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    Geoff - do you document somewhere exactly what...

    Geoff - do you document somewhere exactly what you're doing? I'm finding it hard to follow from this thread.

    The SDK is not going to give you an ACEScct output. Why? Because the Academy don't want...
  17. Although there has not been an update yet (since...

    Although there has not been an update yet (since full release of IPP2)- and if there is I'll make noise on this forum so you'll know.

    Graeme
  18. Best use RCX as if there are ever changes, that...

    Best use RCX as if there are ever changes, that will be up to date and it gives you precision options too.

    Graeme
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    If you want "state of the art" 4K, you have to...

    If you want "state of the art" 4K, you have to shoot at a much higher resolution and downsample. Currently, the best way to get 4k output is to shoot 8k on a Monstro. That gives the richest, most...
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    Yes - unless you're monitoring that signal on an...

    Yes - unless you're monitoring that signal on an HDR display it will look awful.

    Graeme
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    In your RCX preferences you can set your monitor...

    In your RCX preferences you can set your monitor to be 2020/HDR2084 and then you'll be seeing that image. If you pipe the image out of RCX out to your external HDR display it'll look great.

    Graeme
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    Best use IPP2 for this which has great support...

    Best use IPP2 for this which has great support for HDR both HDR2084 and HLG formats.

    Graeme
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    It is!!! But back when we started...

    It is!!!

    But back when we started "uncompressed HD" ruled the world. And just look at the data rates I post above and compare the 8k Monstro image to any "HD" camera - it's beyond night and day...
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    What I think of when shooting is - how much area...

    What I think of when shooting is - how much area of the sensor can I use. As long as I have "enough" resolution, the next most important thing is sensor area. The "amount of data" concern is bogus....
  25. I've not tried testing the shooting ratio on the...

    I've not tried testing the shooting ratio on the downsample, so I'd say you'd have to test there.

    So when you're shooting direct to ProRes you have to be a bit more careful on your over-exposure....
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