Well I am fairly new to the whole film thing as I have moved backwards into film, but I have been shooting color slide film, Fuji Velvia 50 and 100F and been loving the results. Anyways, to my rant, I took some individual slides to Costco to be developed as I wanted to see them blown up a bit. The result I got back look as though it was printed from a 2 mpix camera onto a 12x18 photo. Well I took it back and explained this to the worker who was not suprised in the slightest and told me that you can't blow up film negative to anything larger than 8x10. He also compared the quality to that of a 3 mpix camera and I agreed with him on that was the result of the printout. I just wanted to know their details of the scans they use to print from when I give them a slide. My guess is that they actually scan them and then print from the scanned file. Well, he said they had the most advanced system and it was the best quality possible. Oh of course, that is why my Fuji Velvia 50 slide looks like a web camera picture. He said, well look at it, it is so small of a surface area, oh man, I asked him if he was serious and apparently he wasn't joking. I tried to go into what a 35mm cmos sensor was and how it relates on film and the sensors they are using in professional digitals like the 1Ds mk II and the eyes just glazed over. So anyways, I was able to get my money back, but it is safe to say I will not be taking slides back to Costco What do you think, if I am using Velvia 50, Canon L lenses and a EOS-1v, do you think I should be able to print bigger than an 8x10 image I am having them professional scanned by a nikon ED-5000 at 4000 dpi and saved in TIF, maybe I should take these tiffs back to Costco and show the "photo expert".