I recently took a chance and bought an "AS IS" Zeiss Distagon 50mm f 4 lens for the Rolleiflex SL66 at KEH. The lens was described as having a damaged element and the price was around $100 so I bought it. Rollei SL66 lenses are hard to come by, especially the wide angles.
I received it yesterday and the second element (the lens has 7 elements) from the front has a 1/4" bubble at the edge. Not even covering the aperture. I don't know how it got there the lens case looks perfect.
Anyway, I ran a roll of film through it of the rear of my house ranging from full f4 to f22. On the light table with the 10X loupe, I see a slight blurr bottom right edge at F4 and it seems to go away at f5.6 and through f22.
Any other tests I can do and do I have a good user lens here?
I am just happy to finally have another lens other than the 80mm...
Thanks for your advice,