I'm in the process of putting together an 8 x 10 enlarger and am wondering about the lens(es) to look for. I've heard that the old process camera lenses should work well as enlarger lenses. I have a 355 G Claron - would that work OK? Do you think an APO Nikkor 240 mm lens or work or should I go with something larger than that. What should the "standard" size lens be for 8 x 10 negs?