The Pentax - M SMC 50mm is the standard focal length partnering lens with the Pentax K1000. At max aperture F1.7 an excellent choice for light challenged scenes. An A+ lens and optically perfect. You can buy this lens for your K-mount Pentax or choose the option of adding a K&F precision PK-E adapter which enables this lens to be mounted on Sony E-mount, focus peaking cameras. Both lens cap.
Pentax-A 50mm F1.7 K mount S#1716875
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International purchases are zero rated for GST.