Both are excellent, with the 55mm APO Grandagon (been there, done this lens) being optimized for f8/f11. If larger exposure apertures are needed, the APO Gradnagon is preferred over the Super Angulon XL as the SAXL is optimized for f16/f22, traditional SA design goal.
https://nielspn.dk/files/apo-grandag...randagon-n.pdf
Bernice
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