What is the coverage of a 16 1/2 inch Goerz Gotar lens? I know it will cover 8x1 0 - any larger? I have a Goerz Dagor. I believe the Gotar will be even sharper. Thank you very much.
What is the coverage of a 16 1/2 inch Goerz Gotar lens? I know it will cover 8x1 0 - any larger? I have a Goerz Dagor. I believe the Gotar will be even sharper. Thank you very much.
My recollection is that the Gotar is constructed similar to an Artar. On that basis, you might get 11x14 coverage out of a 16.5" Gotar but I doubt much more. The Gotar definitely has a narrower view than the Dagor.
According to the 1938 Goerz catalog, the 16 1/2" Gotar "Plate size for infinity" is 11X14 inches. "...the lens is of symmetrical design, consisting of 4 single uncemented lenses...", which sounds to me like the Artar formula. It appears to have been a photoengraving lens for B&W work, but Goerz also says: "The lens is also suitable for photography of furniture, automobiles and machinery.". 16 1/2" Dagor coverage given in the same catalog is 11X14 at f7.7, 14X17 at f16, and 20X24 at f45. I seem to recall Artar/Gotar lenses don't increase coverage much as they are stopped down (at least not to the extent Dagors do). If you have a chance to use your Gotar on 11X14 (or larger), please let us know the results. Catalog coverage and real world coverage sometimes differ.
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