F55: ACES for XAVC Footage now avail in Resolve

Nate Weaver

Veteran
Just made a discovery...

Latest update to Resolve adds an Input Device Transform for compressed XAVC material, as opposed to ACES only being available for Sony raw material prior.

Captures of the relevant control panels to change are below:

Screen Shot 2013-04-13 at 7.31.12 PM.jpg

Screen Shot 2013-04-13 at 7.31.26 PM.jpg

There is also an Input Device Transform for "Sony Raw". Don't confuse the two.

I'm finding using this (so far) is stellar for accurate reproduction of all colors (especially skintones), a leap ahead of some prior methods to work with SLog2 material.

After enabling, your footage will pickup contrast, but you can recover both highlight and shadow detail to taste via the wheels, identically to the way Red raw material is handled in Resolve.

You can also apply a track node to reduce contrast for ALL of your shots, if you prefer a lower contrast approach. You might be asking why you would do this if you want the low-con look, why wouldn't you just stick with SLog2 and salt to taste? The answer is correct midtone gamma. It will make a difference in skintones.

IN ADDITION, if your SLog2 material is overexposed, the highlights can be recovered with a much greater degree of precision due to the way ACES works internally (it linearizes the XAVC into deep latitude OpenEXR colorspace, and THEN reapplies Rec709 gamma). All of my early, overexposed SLog2 tests are completely "usable" now, without compressed highlights.

Short story, if the traditional Sony looks leave you cold, look into this. It "un-Sony"s the F5/55
 
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Hey, and don't forget to set all your clips for "Data Levels" in Clip Attributes!

I forgot, and was getting truly weird artifacts, thought it was a Resolve bug.
 
Nate when you apply ACES, IDT, ODT do you find your image gets super duper blue saturated in certain tones? Also were you doing this on XAVC slog2 or Sony RAW footage?

cheers,
 
Nate when you apply ACES, IDT, ODT do you find your image gets super duper blue saturated in certain tones? Also were you doing this on XAVC slog2 or Sony RAW footage?

Not at all. Always looks beautiful.

Back then you would only use it on raw or Slog2, but now you can use Slog3 as well because they added the IDT.

If you turn on ACES and apply it to anything but those 3 or have the IDT wrong, you're going to see some pretty strange stuff?
 
How the F has really transformed in a years time frame huh?

So far I only found ugliness with very high contrast scenes, but only experimented with a select batch of clips. More homework to do yet. Thanks for the input.


On a side note have you managed to convince L.A. to switch away from Alexa to F55 yet? :cool:
 
ACES, IDT, ODT does get slog2 out of the image a little quicker then manually wrangling the controls to get it to the same point, but I see very little difference if any in the highlight rendition. It still needs manual manipulation.

Will head back to my lair and try on more footages.

:)
 
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