Later this year I'm planning on getting some 40" colour prints made, starting from 5x4" NPS colour negs. Maybe up to 6 images in total. Conventional printing seems to be slipping away round these parts for big prints, so I thought give that digital stuff a go - it seems labs consider nothing to be a problem where digital is concerned.
What I plan doing is having the lab scan the negs (about 120mb) then I'll slip the images in to photoshop to do the required tweaking. The alterations will probably only consist of altering density, colour balance, darkening of skies and other bits, spotting out, and possibly a few other 'balancing' effects.
The only images I have worked on so far in Photoshop (6) have all been in B+W (I've done quite a lot) so the colour aspect is all new. Given that the monitor is calibrated OK, and the computer can handle the file size, has any one had any experience tweaking digitized images in this way? The scans are going to be quite expensive, and I don't want to make a hash of it!