The smc FA 645 200mm f/4 IF Lens from Pentax is a medium-format, manual and autofocusing telephoto lens with a 35mm-equivalent focal length of 157mm. It provides a soft out-of-focus (bokeh) effect. It features two extra-low dispersion (ED) glass elements to correct for chromatic aberration, and a ghostless coating to effectively eliminate reflections on the inner surface of the lens, in order to provide sharp images with high contrast. The inner focusing system improves focusing speed and minimizes lens extension, allowing for a closer minimum focus distance.
Focal Length | 200mm |
Maximum Aperture | f/4 |
Minimum Aperture | f/32 |
Lens Mount | Pentax 645 |
Angle of View | 15.5° |
Minimum Focus Distance | 4.92' / 1.5 m |
Maximum Magnification | 0.16x |
Macro Reproduction Ratio | 1:6.25 |
Optical Design | 6 Elements in 5 Groups |
Diaphragm Blades | 8 |
Focus Type | Autofocus |
Image Stabilization | No |
Filter Size | 58 mm (Front) |
Dimensions (ø x L) | 2.93 x 4.69" / 74.5 x 119 mm |
Weight | 1.32 lb / 0.6 kg |
Package Weight | 2.3 lb |
Box Dimensions (LxWxH) | 7.323 x 6.457 x 5.039" |