Leica 16-18-21mm f/4 Tri-Elmar-M ASPH: Flare Assessment
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Flare examples are presented along with a discussion of the types of flare and peformance relative to the 18/3.8 SEM and 21/3.4 SEM.
In Guide to Leica:
Flare Assessment with Leica 16-18-21mm f/4 Tri-Elmar-M ASPH (M240)