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Pastimes : Digital Photography -- Ignore unavailable to you. Want to Upgrade?

To: Hoatzin who wrote (3289)	9/9/2002 8:22:47 PM
From: Done, gone.	Read Replies (1) \| Respond to of 21662

See my PM - I'm sure there are much better ways to test the diffs, I'll try shooting pairs for a while if I think it might be a black and white shot. From what you showed me, why bother, splitting hairs. You had it right the first time, I just complicated it for you. (g) If you ever decide to deal with each color layer separately when converting some select stuborn images to b&w, having the color original will help. (g)

To: Hoatzin who wrote (3289)	9/10/2002 5:03:41 AM
From: Bill Ulrich	Read Replies (1) \| Respond to of 21662

The B/W experiment sounds interesting. A quick way to find the actual difference areas would be to paste one shot on top the other in PShop layers. Set the top layer blend mode to "Difference". The black (or "very near-black") areas are areas of similarity. Lighter areas will show where the real tonality differences occur. Set the blend mode back to "Normal" to manually examine the appropriate areas. Greyish mid-tones can be further examined with the "Exclusion" blend mode. (probably best with precisely exact shots, i.e. tripod)