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06-15-2012, 10:26 PM   #1
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What adapter would I need?

G'day. I have a much-loved ProgramA with a SMC Pentax-A f1.7 50mm lens.

What adapter would I need if I wanted to use it on my K-r (is it even worth it, or is the kit 18-55 that comes with the K-r equal optically?)

Looking forward to your advice,
Lee

06-15-2012, 10:30 PM   #2
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hcarvalhoalves's Avatar

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No adapters. Since it's a Pentax-A, it retains all modern functionally (automatic exposure on all modes, matrix exposure, EXIF information), besides autofocus.

The A 50mm 1.7 is a good prime, brighter than the lens kit. Just mind that it will give a cropped image on the K-r, so it will have the equivalent field of view of a 70-80mm instead [1].

[1] https://www.pentaxforums.com/forums/pentax-lens-articles/93714-field-view-tab...d-645-6x7.html
06-15-2012, 10:33 PM   #3
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No adapters. You need to change your menu item USING APERTURE RING to PERMITTED if you don't have the ring set to A. See https://www.pentaxforums.com/forums/pentax-beginners-corner-q/110658-using-ma...x-dslrs-f.html. Have fun!
06-15-2012, 10:36 PM   #4
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Original Poster
Thanks heaps!! I'll try it out this afternoon with my new toy: eBay Australia: Buy new & used fashion, electronics & home d?r - 40cm Photo Studio Product Photography Lighting Box Tent

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