Aggie, I've read alot of posts, apparantly even a 135mm will give slight light falloff at the corners on 4x5 enlargements. So I'm looking for a 150mm. Also I thought a Componon S is a better lens than a Comparon?? They sell for alot less on ebay.
And Thanks for the suggestions on a lens too guys! I'd like to believe I have a 'perfect' setup lol, but prob. don't. So I'm holding off on that APO lens.