Limitations on editing scanned slides

[bmpress]

Hi,
I recently scanned a paper photo and then opened it in Photoshop. When trying to do a bit of dodging/burning it would not work. Am I doing something wrong, or is it that one can't edit scanned images?

[Bob Atkins]

You're doing something wrong. Is the file a JPG? If it's a GIF or TIFF or BMP it's possible that photoshop may not be able to do some types of editing.

GIF files have a very limited color palette (256 values) and so you really can't dodge and burn them since you can't make subtle changes of color.

If it is something other than a JPEG, just open it up and then save a copy as a JPEG and work on that.

[bmpress]

Thanks, Bob. I tried that same file again and this time it worked properly. Must have been a PC glitch.