I'm surprised your 8 1/2 inch Commercial Ektar even barely fits in your Technika when closed.
I'd known that the f6.3 Tessar covered a greater angle than its faster brethren but I didn't realize that it covered 70º stopped down until I re-read Arne Cröll's report that I cited above. The Commercial Ektars were described as covering an angle of 64º stopped down; the Symmar (plasmat formula) and the Symmar-S were said to cover 70º stopped down.
I think we are all aware of the caveats associated with the claims/statements of coverage of large format lenses.
David
Bookmarks