Hi, can't see the video right now so what I am going to say may or may not be accurate regarding your question, sorry for that :). Talking about dynamic range you can always work with and composite 32bit exr render elements on a 32 bit compositing software or compose your elements in photoshop and when you are done duplicate your layer to a 16 bit psd for further editing. This way you'll have the full dynamic range to re expose your render. Regarding color, color space and color mapping are two different things as far as I understand. You are talking more like about color mapping (filmic to be more specific). This is something like corona's lut. It is kind of a color profile that transforms the colors from a source image to match the look of another. 3ds max is not color managed so I think there's no way to change any color space inside 3ds max, so this is something you will have to achieve in postproduction.