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04-25-2009, 07:28 PM   #1
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[SOLD] Vivitar 28mm f2 (Kiron) Lens In K mount - Like New Marketplace Listing

Item for Sale
Vivitar 28mm f2 (Kiron) Lens In K mount - Like New

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Item Description
Fairly rare, like-new, Kiron-made, Vivitar 28mm f2 close-focusing lens with K mount. Serial #22830993. This is an Auto Wide Angle version that focuses down to 8" or 0.2 of a meter. It is a K12 on the 28mm list. As you can see from the pics below it is in flawless condition. It has no problems at all with glass, aperture blades or operation. I have the Pentax-A 28mm f2 or I wouldn't be giving her up.

This version has the flange at the back that would normally interfere with mounting on a digital Pentax. But I have carefully removed the extended portion (former aircraft metal worker), so that the ring is flush. Everything now works as it should.

I did tripod comparison shots with my A 28, and the Vivitar compares favorably for sharpness at all apertures, with f2 in both lenses being very usable. Flare, CA and PF control tend to be about the same as well -- meaning typical for older glass -- but I'd give the edge to the Pentax. Bokeh seems quite nice with the Vivitar's six aperture blades. Color in the Vivitar is a touch cooler than that in the Pentax. Generally, make a few adjustments in post-processing, and you'd be hard-pressed to tell the difference between them. I've included three, unadulterated, 50%-cropped shots below shot at f2, f8, and f16 from the Vivitar.

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Item Condition
Like New

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Please send me a private message if interested in the item!

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Last edited by warpedwoof; 04-25-2009 at 07:43 PM.
04-27-2009, 03:26 PM   #2
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Bump to ask if there is any interest before I list the lens on eBay. Thanks......Paul
05-07-2009, 04:41 PM   #3
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re: lens

is this still for sale?
05-07-2009, 05:26 PM   #4
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Nice. I have the K11 equivalent but not the K12. I am surprised the Pentax outstrips it, actually, but it's good to note your experience with that. These are solid lenses that are a joy to use in manual-everything mode. I prefer stopping down at least one., but you get the benefit of a brighter viewfinder in any case.

05-07-2009, 06:01 PM   #5
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Thanks, by the way, for all your work on the bestiary, rparmar. The differences between the Vivitar and the Pentax are quite subtle, actually. The coolness of the Vivitar is the only noticeable difference in the images without pixel peeping. The Vivitar does have the advantage in focusing about three inches closer. .........I should have probably uploaded some nicer pics now that spring is finally underway. .....Paul

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