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Martin Vronsky

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    Smc Pentax-FA 50mm F1.4 Classic specifications: Principal specifications Lens type - Prime lens Max Format size - 35mm FF Focal length - 50 mm Lens mount - Pentax KAF Aperture Maximum aperture - F1.4 Minimum aperture - F22 Aperture ring - Yes Number of diaphragm blades - 8 Optics Elements - 7 Groups - 6 Special elements / coatings: SP (Super Protect) coating Focus Minimum focus - 0.45 m (17.72″) Maximum magnification - 0.15× Autofocus - Yes Motor type - Screw drive from camera Full time manual - Yes Focus method - Internal Distance scale - Yes Physical Weight - 216 g (0.48 lb) Diameter - 65 mm (2.56″) Length - 37 mm (1.46″) Filter thread - 49 mm Tripod collar - No
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