Why do I keep buying Dallmeyer lenses . . . . . .
Age wise they span early 100 years. Middle is an 1864 2B 8¼" (210mm) f3 Quick Acting Portrait Petzval, I paid £30 for it, they sell for over £1,000 in this condition (I also have the lens hood). Top right is a 9" f6 2D, with soft focus adjustment roughly 1910. Below is a No 5 9" Stigmatic, I have photographs of Alec Strachan, who actually made this lens in 1901. He worked for Dallmeyer from its founding in 1860, and was still there in 1910. It's a triple convertible lens, you can use the front & rear cells combined or just the front or rear cells giving a range of focal lengths.
The three on the left are the newest, a 1930s 6" f3,5 Dallmeyer Press lens, at the top, used on a Quarter Plate Dallmeyer SLR, a rebadged Ensign Reflex. The lens was also sold as a Dalmac.
The small lenses bottom left are post WWII coated d Dallmeyer f6.5 wide angle lenses, the smallest a 4¼ (108mm) came with a Half Plate Kodak Specialist 2 camera, the other is 5¼" (133mm), so cover whole plate. These lenses are f6.5 for focussing but f11 is the widest & first marking for taking, they are not unique in this respect.
Why GAS, I already have enough lenses of similar focal lengths, but it's fun using "real" vintage lenses.
Ian