Blackmagic Forum

Hello all together

So my question is: Which are the correct settings to CST my BMPCC 6K Film footage to Rec.709.

Color Space: There's Black Magic Design Film 1 and BMPCC 4K Film Gen 4 but no option for the 6K .
Which one should I go with?

Gamma: There's a BMPCC 6K Gen 4 option here.
The metadata of the material itself says Blackmagic Design and there's also the option of Blackmagic Design Film.

Also: Is there information lost, if I transform it back? E.g. if I want to transform to Rec.709 for HSL and afterwards change back, is there a loss of clipped off highlights or shadows or is the information preserved?

I am using DR 16.2.8.005 if it's of any help.

This is my first forum post, so I hope I did everything correctly here.

Thank You very much for Your help!

For reasons unknown, the BMPCC 6K transform is missing from Resolve's CST (though it's possible there's an equivalent among the other choices). You can, however, use the supplied BMPCC 6K - rec. 709 3d LUTs. You might also want to look into Resolve Color Management, which automatically detects the input color space of braw clips.

As for your second question, you lost me. You want to revert to log, after doing in corrections in rec. 709???

John Paines wrote:For reasons unknown, the BMPCC 6K transform is missing from Resolve's CST (though it's possible there's an equivalent among the other choices). You can, however, use the supplied BMPCC 6K - rec. 709 3d LUTs. You might also want to look into Resolve Color Management, which automatically detects the input color space of braw clips.

As for your second question, you lost me. You want to revert to log, after doing in corrections in rec. 709???

Yes but the problem with the LUTs is, that You loose all the information over and below the Gamma of Rec.709.

Thanks, Color Management is pretty much what I looked for in the first place... that is great!
I'll use that and see how it goes

And Yes, for example it is easier to key only certain colors in a color space like rec.709 because the colors are more distinguishable for the computer. Do You understand why I'd do it?
The main question about is: will the information that is outside of the color & luminance range of the rec.709 space still be around if I change settings in later nodes or is it "destroyed"?

You're using the LUTs incorrectly, if they're clipping out of bounds data. It's a matter of node/correction order.

I don't understand why you'd want to leave rec. 709 space (and in favor of what?), once you've normalized the footage, but never mind.

There is an excellent video tutorial by Rippletraining for the new RCM, which I found really helpful.

And then, never use a LUT as the first node. Get control of contrast and highlights first!

My choice would be to use ACES and set the ODT to Rec.709.

Done.

That's another great option.