Björn Benckert
Well-known member
Even us native English speakers confuse things. Particularly when we're talking about very specific things.
Although Jake seems to think the term "transform" directly implies a mathematical approach, that is not the case. Any method of converting one colorspace to another, or one set of values to another, is a "transform." A matrix is one way of doing that. A LUT is another way of doing it. A series of concatenated mathematical calculations is another. If one wants to be specific, your use of the term "mathematical transform" would be correct, as a LUT is not doing any math (it contains pre-calculated values). I work with one of the leading color scientists in our industry and he refers to all of these things - correctly so - as "transforms" because they take one set of input values and yield a different set of output values.
So to be "technically correct" I think it's fair to refer to "mathematical transforms" as opposed to "luts", but it's not really correct to associate the term "transform" only with the former.
Agree. To me a color transform is the same as a color change.
But again all that is just terminology.
All Im saying is c mos sensors fill up very simular / linear to clip. Some has more DR than others and the DRs are layed out differently etc. But in raw the recording is very much linear. The alexa luts have dynamic roundning just as the IPP2 luts
has it. But its simply wrong to say that one camera has it more than the other as its very much a post / user selectable / adjustable thing.