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12-20-2015, 09:41 AM   #1
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Lens compatability

Hi everyone,

I'm planning to purchase a K-50 in the coming weeks, and I recently discovered that my aunt has an old KSX Super film camera lying around that no one uses. I did some research on it and it appears to be basically a Pentax camera. It comes with 2 lenses:
Sears 135mm f2.8 MACRO lens
Sears 50mm f1.7 lens

I've read a little bit about these lenses, and they seem to be fairly well-liked, but I have run into some doubts regarding whether it would be compatible with a K-50. I have heard of a "Ricoh pin" or something to that effect which might interfere with one of the lens's being compatible (I believe it was the 135).


Can anyone tell me for sure whether these lenses will work with a K-50 and if the "Ricoh pin" is a problem I might encounter, and if so, how to look for it?


Thanks,

Merthecat

12-20-2015, 10:08 AM   #2
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The Sears KSX Super was a rebadged Ricoh KR-10. These cameras pre-dated the "Ricoh pin" by several years. If the 135 is from a later date it might have the pin, or it might have a nub that isn't dangerous at all...



Sears lenses marked Made in Korea that have a pin tend to be the dangerous ones. Especially 80-200mm and 60-300mm lenses.
12-20-2015, 02:32 PM   #3
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So if it has a pen, it might not work, and if it has a nub it should work, correct?
12-20-2015, 02:39 PM   #4
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QuoteOriginally posted by Merthecat Quote
So if it has a pen, it might not work, and if it has a nub it should work, correct?
Even if it has a pin it would work. The danger is that it could get caught in the AF screw drive. Only a few lenses have a pin that will get caught, and if they do it is easy to remove in most cases.

12-25-2015, 03:26 PM   #5
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The Sears might be still working if you fed it some film
12-26-2015, 04:14 PM   #6
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I had a Sears 135 for a while - it was a fun lens for as cheap as it was. Got some great shots before I passed it to friend.
12-26-2015, 05:04 PM   #7
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FWIW it's a common misconception that many Sears K-mount lenses were made by Ricoh.
This is true only of some 50mm lenses sold for Ricoh-made Sears bodies.

Chris
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