Hi all, Just thought you 12x20 shooters would like to know....I recently bought a 450mm Nikon f9 and it covers 12x20 nicely as you probably are aware. The surprise is that a 480 mm f9 apo-nikkor that I got for free from a print shop also covers too. In fact it really looks good on the GG even at f9. Bright and sharp! Anyway I almost wish I had waited on the 450mm as the 480mm looks so good. I have just eyeballed these lenses on the GG and not tested them yet. Has anyone made detailed tests of the differences of these two different designs at infinity and 1:1? Thanks in advance!