Bill_92
9-Feb-1998, 19:03
I'm wondering about whether there are downsides (besides weight and cost, of cou rse!) to using extra-large coverage lenses in cases where you don't need the cov erage.
Consider some 90mm options for 4x5 cameras from only two companies. Schneider's standard SuperAngulon 90 has pretty good coverage (216mm? I don't have spec shee t, so these numbers are from memory) and the front element is fairly small (67mm filter size). Nikon offers two 90mm's, both with image circles of 236?mm; the f /8 has a 67mm front element, I believe, and the f4.5 has an 82mm front element. Finally, Schneider's 90XL has excellent coverage (259mm?) but the front element is a huge 95mm filter size.
My question is whether having a larger front element and more coverage will "cat ch" glare/flare and lights/sun that are out of the portion of the image being re corded on film. In other words, all else being equal, is it optically more prude nt to only buy as little coverage as you think you can get away with, or is no h arm done (again, notwithstanding weight and cost) by investing in that might-nee d-it-someday huge image circle? Thanks in advance...
Consider some 90mm options for 4x5 cameras from only two companies. Schneider's standard SuperAngulon 90 has pretty good coverage (216mm? I don't have spec shee t, so these numbers are from memory) and the front element is fairly small (67mm filter size). Nikon offers two 90mm's, both with image circles of 236?mm; the f /8 has a 67mm front element, I believe, and the f4.5 has an 82mm front element. Finally, Schneider's 90XL has excellent coverage (259mm?) but the front element is a huge 95mm filter size.
My question is whether having a larger front element and more coverage will "cat ch" glare/flare and lights/sun that are out of the portion of the image being re corded on film. In other words, all else being equal, is it optically more prude nt to only buy as little coverage as you think you can get away with, or is no h arm done (again, notwithstanding weight and cost) by investing in that might-nee d-it-someday huge image circle? Thanks in advance...