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Information Release year 2006 Minimum aperture F/22-36 Maximum aperture F/3.5-5.6 Aperture blade 7, circular Elements, groups 11, 9 Min. focus distance 38cm Focus design Front Length 77mm ~ 97mm Filter 55mm, front Hood Bayonet, round Weight 235g Dimension 77mm x 66mm Lens pics Link http://www.photodo.com/product_1143.html http://www.mhohner.de/sony-minolta/onelens/afdt18-70f35s

Information Release year 2006 Minimum aperture F/22 Maximum aperture F/1.4 Aperture blade 7, circular Elements, groups 7, 6 Min. focus distance 45cm Focus design Extension Length 43mm ~ 46mm Filter 55mm, front Hood Bayonet, round Weight 220g Dimension 43mm x 65.5mm Lens pics Link http://www.photodo.com/product_1137.html http://www.mhohner.de/sony-minolta/onelens/af50f14s

Information Release year 1986 Minimum aperture F/22 Maximum aperture F/2.0 Aperture blade 7 Elements, groups 9, 9 Min. focus distance 30cm Focus design Internal Length 49mm ~ 52mm Filter 55mm, front Hood Bayonet, flower Weight 285g Dimension 49.5mm x 66.5mm Photodo test result: 4.1 Effective focal length: 28 Weighted MTF for 28 mm: f2 0.65. f2.8 0.79. f4 0.81. f8 0.82 Average Weighted MTF: 0.82 ..

Information Release year 2001 Minimum aperture F/32 Maximum aperture F/2.8 Aperture blade 7, circular Elements, groups 7, 6 Min. focus distance 20cm Focus design Extension Length 60mm ~ 106mm Filter 55mm, front Hood Weight 295g Dimension 60mm x 71.5mm Photodo test result: 4.5 Effective focal length: 51 Weighted MTF for 50 mm: f2.8 0.79. f4 0.85. f8 0.87 Average Weighted MTF: 0.86 Grade: 4.5 Weig..

Information Release year 1990 Minimum aperture F/22 Maximum aperture F/1.7 Aperture blade 7 Elements, groups 6, 5 Min. focus distance 45cm Focus design Extension Length 38mm ~ 46mm Filter 49mm, front Hood Round, integrated Weight 170g Dimension 39mm x 65.5mm Lens pics Link http://www.photodo.com/product_761.html http://www.mhohner.de/sony-inolta/onelens/af50f17new

Information Release year 1985 Minimum aperture F/22 Maximum aperture F/2.8 Aperture blade 7 Elements, groups 5, 5 Min. focus distance 30cm Focus design Extension Length 44mm ~ 54mm Filter 49mm, front Hood Round, integrated Weight 185g Dimension 42.5mm X 65. 5mm Photodo test result: 3.8 Effective focal length: 29 Weighted MTF for 28 mm: f2.8 0.76. f4 0.79. f8 0.80 Average Weighted MTF: 0.79 Grade..