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..
Third EyE/alpha's
2009. 2. 3. 16:47