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50 Voigtlander Kontur This is a very unusual finder, and one of my favorites. Made for the Voigtlander Vitessa, the center of the finder is blacked out! The idea is that you look through it with the right eye, and keep the left eye open. The finder itself shows the frameline for 50mm, instead of the image! I know it sounds strange, but our brain puts the images together when one eye sees the image and the other sees the frameline. This finder will show you virtually unlimited peripheral vision! It's really too bad other manufacturers did not follow this idea. See it and try it, you might love it like I do. Note the ""35mm" label on the finder. This is a bit confusing...it refers to the format, not the lens. This finder does indeed show a 50 frameline. I am not sure if other focal length Konturs were made. To confuse things further, those tricky Voigtlanderians also made a 35mm Kontur. Nevertheless, this is a unique finder which can do good things for your shooting technique, well worth looking for.