Information Release year 1988 Minimum aperture F/32 Maximum aperture F/2.8 Aperture blade 9 Elements, groups 8, 7 Min. focus distance 150cm Focus design Internal Length 134mm ~ 134mm Filter 72mm, front Hood Integrated, round Weight 790g Dimension 134mm x 86mm Photodo test result: 4.1 Effective focal length: 193 mm Weighted MTF for 200 mm: f2.8 0.80. f4 0.80. f8 0.84 Average Weighted MTF: 0.83 Gr..
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