clipka wrote:
> 
> I have no idea which of these approaches would leave you with the least loss. I
> guess (a), but it depends on how Photoshop does things internally. If for
> example it stays in the 8 bit integer domain for its computations, (b) is
> obviously crap; but if it uses floating-point math (or at least 16-bit
> arithmetics) during any "merge layers" operation, but converts back to 8-bit
> after such an operation, you're definitely better off with (b).
> 
> In any case, Photoshop can never do as good as POV.
> 

err, just for the records, P'shop works well with 16 bit/channel (not 
only for temporary computation) since more then 12 years, does most
if its internal calculation in the L*a*b color space (so yes, it uses 
fp) and has since CS3 (hmm, around since 2 years I guess) even full 
support for HDRI in 32bit/channel floating point format. P'shop even 
supports OpenEXR HDR images as written quite nicely by the POV 3.7 - the 
format I use most of the time.
Oh, and Photoshop works within a specified color space where POV-Ray not 
even knows what a color space is (e.g. I bet POV simply clips negative 
RGB components to 0 at some stage).
Anyway I'm not getting payed by Adobe by saying so (in fact I dislike
them for most of their company policy) so I'll shut up for now.

-Ive

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