Hello All,
I must admit that my English didn't allowed me to understand what you have wrote here.
But you might experiment the following:
Open a 8 bits file, convert it in 16 bits, save it with a different name, close the file and re-open the first one. You'll have the same picture, one in 8 bit, the other in 16 bits.
Create a bunch of adjustments layers with the most weird settings you can imagine, on which picture you want. Drag and drop the adjustments layer from one pict to the other, you may wish do it in the order they had been created, or merge them as soon they had been created.
Then convert the 16 bits file to 8. Copy one picture to the other one, and set the new layer created in "Difference" blending mode.
I had tested this with a real world picture and a grey gradient as well.
The result had always been a full black, zero, nib... the brighter pixels I get were something like 2/1/0. A calculation error. During the process I never saw any differences in the appearance of any pictures.
If some of you want to take advantage of the 16 bits file processing they should do, as I do, start with a 16 bits mode file, of course it will increase the scanning time, depend your need and the destination of your pictures.
Cheers.
Fernand Ivaldi
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