What type of production? Most files created in Photoshop are not intended to be output from Photoshop, but from a pagelayout application.
With InDesign, the rules have changed dramatically in how you would prepare files.
Rule one however is and should always be to contact the printer.
Bob
Thanks Bob. Print Production is what I was referring to, and you’re right, page layout is where I should be posting this. I was reading the PS forum and just popped it in but I’ll re-post it to the Indesign forum. At any rate, your thoughts on "the rules have changed dramatically" would be much appreciated too. Thanks.
Gordon
The rules have changed because up til ID version 2 transparency was not supported in any pagelayout application.
In the past it was necessary to save as TIFF and if you needed transparency a clipping path had to be drawn and the file saved as EPS or TIFF (if tiffs with clipping paths were supported). With ID 2.0 you could simply place a PSD or TIFF file with a transparent background and your transparency would be honored.
With ID CS that support has been extended to PSD files containing spot color information such as duotone files.
HTH,
Bob
Maybe you could get an out of work standup comic to teach the class, like they do for traffic school.