Up for sale is a nice vintage example of a classic "classic fantastic" standard prime lens, the Auto Sears 50mm f/2.

This standard lens, produced by Ricoh as part of their Rikenon line and rebadged for sale in Sears department stores, produces shockingly high quality images for a lens of its price, with great sharpness, color, and rendition.

Excellent vintage condition with light exterior wear and excellent mechanics. Glass is  free of scratches/haze/fungus. 

This lens features the original version Pentax K mount, which can be used natively on all Pentax K mount SLRs and DSLRs, with mechanically coupled aperture on K mount film cameras. It also can easily be adapted for use on most popular DSLR, and mirrorless formats with an inexpensive adapter ring (sold separately, see chart below for digital compatibility).

If you have any questions about whether this lens is adaptable to your camera system, please contact me before purchase.

Digital mount compatibility chart

Mount

Adaptable?

Glassless Infinity?

Notes

Canon EF DSLR

Y

Y*

* Some lenses require minor modification for use with Full Frame Canon cameras.

Nikon F DSLR

Y

N


Pentax K DSLR

NATIVE

NATIVE

Green button/manual operation on DSLR

Sony A DSLR

Y

N


Panasonic/Olympus 4/3 DSLR

Y

Y


Canon EOS M Mirrorless

Y

Y


Canon EOS R Mirrorless

Y

Y


Fuji X Mirrorless

Y

Y


Leica/Panasonic/Sigma L

Y

Y


Panasonic/Olympus m4/3

Y

Y


Nikon 1 Mirrorless

Y

Y


Nikon Z Mirrrorless

Y

Y


Pentax Q Mirrorless

Y

Y


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