Digital BW, The Print

on 12/5/01 12:50 PM, Martin Glader wrote:

> Isn't it also so, that you get more posterization problems if you apply
> several adjustments at a "pixel level" through Image -> Adjust than what
> you get if you apply your adjustments in adjustment layers. In the
> latter case the shifts on the "pixel level" will be those of one
> "resultant" adjustment instead of several.

Yes and no.

There is a misconception that if you have a stack of adjustment layers they
are somehow combined first, and then applied to the image as one grand move.
That is not the case. Adjustment layers are applied to the file one by one,
from the bottom to the top.

The scenario by which they are less destructive is that you can reopen your
adjustment layers and re-manipulate it, change it's opacity, it's apply
mode, it's blend mode, over and over again,  but whatever your final choice
for that layer, the manipulation is only applied once. So, it's possible to
tweak and experiment ad infinitum before committing the move to the image.

Todd