A medium-focus, manual, autofocusing telephoto lens provides a 35mm-equivalent focal length of 157mm and gives images a soft bokeh (or out of focus) background effect. Two Extra-low dispersion elements enhance quality by correcting chromatic aberration, while ghost-less coating prevents refraction on the lens' inner surface.
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.
PENTAX 645AF2 bayonet
200mm (Equivalent to 157mm in 35mm format)
Angle of View
20° - 645 Film 15.5° - 645Z, 645D
6 elements in 5 groups
Min. Aperture (f)
Min. Focusing Distance
1.5m (4.5 ft.)
Diameter & Length (mm)
74.5mm x 119mm
Number of Diaphragm Blades
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