Ricoh XR Rikenon 50mm f/1.7 (SN: 102851)
A sharp and fast standard lens with K-mount compatibility.

The Ricoh XR Rikenon 50mm f/1.7 is a classic manual focus prime lens designed for 35mm SLR cameras using the Pentax K-mount. Known for its optical clarity and fast f/1.7 aperture, it’s ideal for portraits, low-light photography, and general-purpose use. The lens delivers pleasing bokeh, good contrast, and sharp results — even wide open.

It’s fully compatible with any manual focus Pentax K-mount camera, and can also be used on modern digital cameras (including mirrorless systems) via adapter.

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Key Features

• Mount: Pentax K (Ricoh/Rikenon variant)

• Focal length: 50mm

• Maximum aperture: f/1.7

• Aperture range: f/1.7 to f/16

• Optical construction: 6 elements in 5 groups

• Minimum focus distance: ~0.6m

• Filter size: 52mm

• Compact metal and plastic construction

• Made in Japan

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Condition
Used – Good condition
Lens (SN: 102851) is in good working order. Optics are clean — no haze, fungus, or separation. Focus ring is smooth, and aperture blades are dry and responsive. Minor cosmetic wear on the barrel but nothing affecting performance.

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What’s Included

• Ricoh XR Rikenon 50mm f/1.7 lens (SN: 102851)

• Front and rear lens caps

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