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02-26-2016, 11:38 AM   #1
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Sears & Ricoh 50mm f:1.7 lenses

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Item for Sale
Sears & Ricoh 50mm f:1.7 lenses

Asking Price
60.00 USD

Item Location
Idaho (United States)

Item Description
For Sale:


1. Auto Sears MC 50mm f:1.7 Moderate internal dust particles. External cosmetics are excellent. Very smooth focus throw. Aperture ring has a little play, but very positive engagement at each setting. Produces some very sharp images. Factory box.


2. Ricoh Rikenon-P 50mm f:1.7 Minimum internal dust particles. External cosmetics are superb. Focus throw is very smooth with very positive aperture clicks. Comes with factory front lens cap and generic rear cap. It produces some extremely sharp images.


Aperture blades on both lenses are very snappy and free of any oil.


Asking $60.00 for both lenses plus $15.00 shipping to lower 48 states.

Are you the original owner of the item being sold?
No

Are you selling or trading this item?
Selling

Item Condition (Key)
Used
Excellent

Shipping Destinations
Continental U.S. Only

Shipping Charge
15.00

Shipping Services
USPS Priority Mail

Accepted Payment Types
PayPal Check/Money Order

Return Policy & Additional Details
Full refund, minus shipping within 10 days of receipt of lenses if buyer isn't satisfied.

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


Last edited by Dewman; 03-30-2016 at 02:56 PM.
02-26-2016, 02:07 PM   #2
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Apart from the P setting for those Ricoh bodies capable of using it, are these two lenses not basically the same thing? Or did they change the optical formula when they went to the auto aperture version?
02-26-2016, 02:56 PM   #3
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QuoteOriginally posted by pathdoc Quote
Apart from the P setting for those Ricoh bodies capable of using it, are these two lenses not basically the same thing? Or did they change the optical formula when they went to the auto aperture version?

I really have no idea. Sorry. dcshooter would know. He's the authority on lenses in these parts.
02-27-2016, 11:17 AM   #4
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There were actually 2 versions of the Auto Sears MC 50mm f:1.7. One was built by Ricoh and is made of plastic and is fairly low profile (short). It goes from f:1.7 - f:16 in full stops. it generally looks like the Ricoh lens you have shown here - without the "A" or in this case "P" setting. It also has a 52mm filter thread - just like the Ricoh. I have that version of the sears lens and it is quite good and would probably be a similar optical formula to the "P" version Ricoh lens shown here.

The second version of the Auto Sears MC 50mm f:1.7 is also very good, but it is likely made by Chinon. It has a 49mm filter thread (as does the Chinon). It is also a little larger (taller) and is typically made of metal. As a result, it is heavier - and built like a tank. (Even though the Ricoh version is plastic, it is still very sturdy/well made). The Chinon version goes from f:1.7 to f:22 and generally has half stops. I also understand that it has a closer minimum focusing distance. It looks like the Sears lens shown here is the Chinon version.

Here are a couple of links on the forum that discuss these lenses.

Chinon Auto MC 50mm f/1.7 Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database

https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/269891-lets...enney-etc.html

Hope this helps!

02-27-2016, 11:31 AM   #5
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Thanks for that!
03-04-2016, 03:16 AM   #6
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Bump, please.
03-11-2016, 09:51 PM   #7
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Another bump, if I may.
03-13-2016, 05:21 PM   #8
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For those who are unaware, WARNING!!! The Ricoh lens has the infamous Ricoh pin, and could become jammed on autofocus Pentax bodies, including all digital models!!!

03-13-2016, 05:32 PM   #9
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QuoteOriginally posted by Steve Beswick Quote
For those who are unaware, WARNING!!! The Ricoh lens has the infamous Ricoh pin, and could become jammed on autofocus Pentax bodies, including all digital models!!!

They pose a problem ONLY if they're the squared off pins. This Ricoh lens has the rounded pin. I have used it on a K-50, a K-r, a K-x, a K10D, a K-30 and a *ist DL with NO problems. The Sears lens has no pin.
 

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