Re: [APML]: Stacking in Photoshop

[Chuck Vaughn <aa6g@aa6g.org>]

Mike Regish wrote:
> 
> I've finally figured out how to stack negatives in Photoshop, but now I keep
> running into illegal operation errors. They happen at various stages of the
> process. I've gotten all the way through a few times and saved as jpeg, but
> the next time I try, I get hit with an illegal operation and have to close
> it down.

Are these operating system errors?

> I'm running a Pentium 233 with 32 meg RAM. I know I should have more RAM,
> but I don't think that's the problem. I've tried with smaller files and get
> the same thing.

You need lots of RAM if you want to avoid spending lots of time with
virtual memory. You need 4 times the image size plus room for the progam
and the operating system. If you're stacking images you need 8 times the
image size. Adds up fast doesn't it? :-)

> Also, exactly how do you rotate the layer when you're trying to register the
> negs?

Set the transparency of the layer to 50% and use the arbritray layer rotation.
My old computer is too slow to use this method but your's is probably fast
enough.

Chuck  <aa6g@aa6g.org>