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Old 12-25-2018   #7
Phil_F_NM
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Join Date: Jun 2004
Location: Philadelphia, PA
Age: 42
Posts: 3,885
The only true sonnars for SLRs you can use will be over 90mm due to the physical constraints of the formula. The original 10.5cm Nikkor for the Nikon F was about the shortest you could find this formula. No such thing as a 50mm Sonnar for an SLR that reaches infinity focus.
Phil Forrest
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