> I couldn't find the original post lamenting the fact that Photoshop > won't handle 16 bit images, but here is help. You CAN make selections > and masks and work with these images! It was my post and it does not. I was intrigued when PS 7 came out to see if they finally ... ... nope, the majority of tools still only work for 8 bit per channel. Even the histogram? Yes, even PS 5 "works" with 16-bit per channel - err, it lets you load them and do a few basic manipulations. It is not seamless though. > > To work magic in Photoshop using 48 bit images go here: > http://www.computer-darkroom.co.uk/ > look under 'Photoshop Tutorials' 'editing 16 bit images'. Well, Jim, here is the opening paragraph ;o) "I'm sure, like me, you have read the various recommendations that Photoshop users should endeavour to edit their images in high-bit mode. The argument has been that by doing so we can minimise the data loss that is inherent in any image editing operation. However, open a high-bit image in Photoshop you will immediately realise that many of the tools with which you are familiar and so dependent are disabled. " The biggest omission for me: "Chief among the missing tools are adjustment layers " Sure, the tutorial does show some kludges to get round *some* of the deficiencies - but they reamin kludges. Indeed, I'll keep the tutorial (the PDF version) and have a go but the truth is it should be seamless to be of real value. > For selective Photoshop masking that works for unsharpening your image > better, go here: > http://digitaldog.net/tips.html > look for the PDF file called "Selective Sharpening using an image > mask" Again, an interesting document ... thanks. It still does not change the fact that PS is an 8-bit per channel system. Bob
