Quote Originally Posted by David Lyga View Post
Also, is it true that a blue light will result in slightly sharper prints, due to the fact that you now do not have to worry about all the various colors present in tungsten 'white' light needing to be focused? - David Lyga

Microscopists use this principle of using blue light, light with shorter wave length, to obtain the sharpest image possible. BUT, they are looking at objects at 1000x magnification and trying to extract finer resolution at that extreme magnification. They also use Apochromatic lens so that convergence error is minimized. But again, they are worried about it at an extreme magnifications.

B&W paper is already mostly sensitive to blue/green spectrum only. Magnifications we are talking about isn't nearly as extreme either. Provided that you are using quality lens, I doubt it'll make any visible difference.