How optical lens are being made in Russia?
http://englishrussia.com/2014/10/24/how-optical-sights-are-being-made/#more-153688 Very interesting article - and website too. I would recommend.
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50mm and 58mm Lens Comparison in the macro test
Test done with the help of the Sony A37 camera attached to a tripod. All lenses were set to aperture f.8. I photographed a banknote - 100 German Mark from 1908. List of lenses occurring in the test: 1. Carl Zeiss Jena Tessar 50mm F2.8 Silver 2. Meyer-Optik Görlitz Primotar E 3.5/50 3. Helios 44-2 58/2 Zebra 4. Meyer - Optik Görlitz Oreston 50mm f/1.8 5. Industar-50-2 3,5/50 6. Cosinon 55mm f2.1 7. Meyer-Optik Görlitz Domiplan 50mm f/2.8 8. Carl Zeiss Jena Pancolar 1.8/50 zebra 6 blades electric 9. Helios 44-2 58mm F/2 10. Carl Zeiss Jena Pancolar 50mm f/1.8 Zebra M42 8 blades 11. Carl Zeiss Jena Biotar 58mm f/2 M42 Carl Zeiss Jena Biotar 58mm f/2 M42 Cosinon 55mm f2.1 Meyer-Optik Görlitz Domiplan 50mm f/2.8 Helios 44-2 58/2 Zebra Helios 44-2 58mm F/2 Industar-50-2 3,5/50 Meyer - Optik Görlitz Oreston 50mm f/1.8 Carl Zeiss Jena Pancolar 1.8/50 zebra 6 blades electric Carl Zeiss Jena Pancolar 50mm f/1.8 Zebra M42 8 blades Meyer-Optik Görlit...
An important link for users who want to use a Canon camera lenses to the M42 connector.
An important link for users who want to use a Canon camera lenses to the M42 connector. Under this link you will find a large list of lenses tested for safe use. http://www.panoramaplanet.de/comp/#top You need to be aware that you can damage a camera.
Test wide-angle lenses. Primagon 35/4.5 vs PENTACON 2,8/29 vs Mir-1B 37mm F2.8 vs Flektogon 35mm f2.8
A simple test. Pictures taken with the same settings. (ISO 400) Conclusion leave recipient. Sorry for the inaccuracy in the tests on the shutter speed. The weather was variable, and the light also be changed. List of lenses: 1. Meyer Görlitz Primagon 35/4.5 2. PENTACON 2,8/29 3. Mir-1B 37mm F2.8 4. Carl Zeiss Jena Flektogon 35mm f2.8 1. Meyer Görlitz Primagon 35/4.5 Meyer Görlitz Primagon 35/4.5 at f,4.5 Meyer Görlitz Primagon 35/4.5 at f,8 Meyer Görlitz Primagon 35/4.5 at f,11 Meyer Görlitz Primagon 35/4.5 at f,16 2. PENTACON 2,8/29 PENTACON 2,8/29 at f.2,8 PENTACON 2,8/29 at f.4 PENTACON 2,8/29 at f.5,6 PENTACON 2,8/29 at f.8 PENTACON 2,8/29 at f.11 PENTACON 2,8/29 at f.16 PENTACON 2,8/29 at f.22 3. Mir-1B 37mm F2.8 Mir-1B 37mm F2.8 at f.2,8 Mir-1B 37mm F2.8 at f.4 Mir-1B 37mm F2.8 at f.5,6 Mir-1B 37mm F2.8 at f.8 Mir-1B 37mm F2.8 at f.11 Mir-1B 37mm F2.8 at f.16 4. Carl Zeiss Jena Flektogon 35mm ...