Posted: Fri Feb 25, 2022 11:22 pm Post subject: |
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D1N0 wrote:
The reason I tried is because the 5/7 design seems to be related to the Carl Zeiss Planar a 7 element double gauss with 5 groups where the center elements are two doublets. Obviously the lens is not very Planar at macro focusing distances. _________________ pentaxian |