I'm planning to replace my 90mm lens with a wider compliment to a 110mm lens. For reasons or bulk, weight and filter compatibility, the 72mm Schneider is out of the running. I'm looking closely at the Rodenstock 75mm f4.5 Grandagon-N and Schneider's 80mm Super Symmar XL. Weight, image circle, and flange back have me leaning toward the Schneider lens but the lower price and slightly wider view of the Rodenstock are confounding the decision. I will be using the lens on a 4 by 5 rig for landscapes and will swing and tilt accordingly.
My question: which lens will be less likely to require a center filter? Discussions of optical design and statements like: "entrance pupil diameter increase when viewing at an angle" may prove helpful to future readers of this thread (so by all means, don't hold back), but I have no formal training in optics and am hoping to hear: "I've owned both lenses and absolutely never needed a center filter with lens A and always needed one with lens B."
Thank you in advance!
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