Canon's super-speed lens of the 1950s.
This is important if you get one of these lenses and want to use a filter with it: The front element curves out unusually far from the base of the filter threads. Canon made a special filter for this lens, the glass is placed at the very top of the filter in order that it not hit the front element of the lens. A push-on type hood was used, the filter is not threaded for a hood. The special filter and hood combination avoids vignetting as would occur using a standard filter and hood. An easy solution is to use a 55->58 step up ring, and 58mm filters and hoods. This is what I do for the 7Artisans 50/1.1.
When looking for one, be sure to have inspection and return privilige. The surface behind the aperture blades is subject to haze, coating damage, and glass etching. Get a good one, classic old-school rendering. I have had two of them, but sold the second one after getting the 50/1.1 Nokton.
This is important if you get one of these lenses and want to use a filter with it: The front element curves out unusually far from the base of the filter threads. Canon made a special filter for this lens, the glass is placed at the very top of the filter in order that it not hit the front element of the lens. A push-on type hood was used, the filter is not threaded for a hood. The special filter and hood combination avoids vignetting as would occur using a standard filter and hood. An easy solution is to use a 55->58 step up ring, and 58mm filters and hoods. This is what I do for the 7Artisans 50/1.1.
When looking for one, be sure to have inspection and return privilige. The surface behind the aperture blades is subject to haze, coating damage, and glass etching. Get a good one, classic old-school rendering. I have had two of them, but sold the second one after getting the 50/1.1 Nokton.
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