monkeymon
17-Feb-2014, 10:19
Hello
I got this Carl Zeiss Jena J.R. Tessar 500mm f/5 lens. Just noticed, that it's marked J.R. Tessar. Not just plain Tessar as my other Zeiss Tessars lenses. It's marked with red T for coating.
Anyone know what the J.R. stands for?
One cool thing about this lens is, that i can unscrew the first element. In my other (f3.5) tessars, the two front elements unscrew as a block. Doesn't this means i can use the front lens as a soft focus control device?
I got this Carl Zeiss Jena J.R. Tessar 500mm f/5 lens. Just noticed, that it's marked J.R. Tessar. Not just plain Tessar as my other Zeiss Tessars lenses. It's marked with red T for coating.
Anyone know what the J.R. stands for?
One cool thing about this lens is, that i can unscrew the first element. In my other (f3.5) tessars, the two front elements unscrew as a block. Doesn't this means i can use the front lens as a soft focus control device?