Finishing the BPC conversation.....
Finishing the BPC conversation.....
Rich Apollo wrote:
I can't accept this as a blanket statement. When performing a color transform, BPC generally makes sense.
When trying to preview output on-screen, BPC is absolutely wrong.
Hi Rich,
First Point: I was talking about the user's request relative to his Epson printer without a rip.
Second Point. Your point for display is not correct in all cases. If the profile has a zero value in the zero location lut section of a V2 profile, and the display has high relative contrast, Photoshop will proof the image far too light (low contrast) on the display. In this case you are far better off using BPC. In a properly formed profile, BPC should work fine, for perceptual display of images on a display, but I agree with you that it would not give a good representation of the image on a lower contrast output in print.
This whole area contiues to be a real mess in the general market place. It is a total disaster with applications. If you are working in Photoshop at a professional level you find some consistency and correct handling, both within the application and across platforms. We did a technical market study and found that Black Point compensation and Rendering Intent are rather random events in many "color managed" applications. Such randomness can often be found while "sizing" an image on a display. We also found that same application on different platform, behaved differently.
So I agree with you when we speak to the professional market place. I'm not sure that the statement about preview with BPC being always wrong is necessarily correct. You have to test the app and the profile. Your milage will vary.
Take care,
Tom
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