This is an interesting lens. It was made by Mamiya and also sold in M42 mount.
It's a rectilinear ultra-wideangle lens, not a fish-eye. Not the best in class but it's at least affordable. I costed a fraction of the mainstream Miltoltas, Canons and Nikons.
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| Voigtlander Color-Skoparex 21mm F4 |
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| Voigtlander Color-Skoparex 21mm F4 |
It has a very beautiful coating but it's not enough to prevent flaring. Always use a light hood and avoid pointing to strong light sources.
The image quality is adequate for film and usable on digital. Remember that this is very subjective. For my taste, it performs acceptably at F8 on my Sony A7-III. At F4, the corners are soft.
If we are talking about UWA lenses for full-frame sensor cameras, this one is a bargain, but not the easiest lens to find.
This lens is identical to the Rolleinar MC 21mm F4
Technical data:
Angle of view: 91,7 degrees
Optical formula: 9e/8g
Filters: 58mm
Weight: 250g
