This applies to both AE and PPro.
As far as i can tell, when a cDNG sequence is imported we get the ACR dialog. This is used to basically pregrade that file, create a 'look' for it, then we get the footage. However the footage we get appears to be a reduced section of the full file. In other words i don't get the full linear range of the DNG to work with in AE or PPro. If i reduce exposure on the file it acts like a sRGB jpeg and whites grey down. Whereas if i adjust exposure in the ACR dialog it works as i would expect.
Is this the case? What are we actually getting out of the source file?
All i want is full range linear from the DNG but this doesn't appear possible?
Not that it's a direct answer to your question, but have you tried Ginger HDR?
If memory serves, it provides access to full dynamic range right in AE composition.
Well that does look very interesting. Except that it's just been discontinued! But that reads like it's what i've been looking for. So i'll have a proper look in the morning.
Thanks for that though.
Why i can't do that with AE or PPro seems a bit of a mystery...
Just read the John's blogpost... Probably rumors about including Camera RAW into PrPro CC in the nearest future are valid...