Thanks for the reply, comparing raw -> BMD FILM with raw -> Rec709 in Resolve, I see no real reason so far to use BMD but it's personal choice, I understand that.
Do you apply a BMD to Rec709 3D LUT for output or just grade the BMD output until it looks the way you want and fore go the final output transform from BMD -> Rec709?
Going to the final colour space and adding gamma is the very last operation on raw so Resolve 11 gives control over shadows, highlights, saturation etc before colour space and gamma are added, it's 16bit data so even with Rec709 gamma applied there's enough levels available to support about 16 f-stops comforatbly more than enough to play within without the need to use BMD Film transform.
Depends which way to go about it I guess, process raw -> BMD and grade without Rec709 Output 3D LUT giving all that room in shadows and highlights as it's log but having to inject contrast and saturation or work with a Rec709 Output LUT over and pull shadows and highlights into play, nothing is lost.
The BMD Film and colour space are specific to their cameras, just like the idea that a proper transform for Canon raw is required. Can't help thinking that part of the BMD Film and colour space transforms and 3D LUTs are to massage specific BMD sensor colour bias, which you can bet are not the same colour bias's in Canon raw and could be more detrimental to Canon raw rather than helpful.
I though one of the goals of DNG & CinemaDNG was to provide all the necessary data required for transforming without the need for an application to know the specifics of a certain camera, as long as those specifics are open and transparent, assume the other Camera raw options in Resolve such as BMD's exist because they don't want to provide that information.
But for Canon raw has no one profiled the cameras like FilmConvert have done, in order to add the correct info into the DNG's for Resolve and other apps to interpret? Non of the .MLV and .RAW to DNG wranglers have this functionality? Other than a basic matrix and black level?