This zoom lens offers a wide coverage of the telephoto range with a f/5.6 to f/45 aperture and a 35mm equivalent focal length of 118.5mm to 236mm.The minimum shooting distance is 2m throughout the entire zoom range, and the maximum shooting magnification is 0.18X (at 300mm).
The smc FA 645 300mm f/4 ED (IF) Lens from Pentax is a medium format, manual and autofocusing telephoto prime lens with a 35mm-equivalent focal length of 200mm. The surface is treated with Pentax's Super Multi Coating for sharp, high-contrast images. Extra-low Dispersion (ED) lens elements assure high image quality by minimizing chromatic aberrations. The Inner Focus (IF) mechanism minimizes lens extension when focusing, maintaining good balance and assuring smoother focus ring operation and a closer minimum focus distance. The lens was developed using computer-assisted optical design technology for a high degree of precision.
PENTAX 645AF2 bayonet
150mm - 300mm (Equivalent to 118mm - 236mm in 35mm format)
Angle of View
21° - 10.5° - 645 Film 17° - 8.5° - 645Z, 645D
15 elements in 13 groups
Min. Aperture (f)
Min. Focusing Distance
Number of Diaphragm Blades
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