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04-20-2013, 09:21 PM   #1
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Pentax SMC-P 50mm f/2 M or Richo Rikenon P 50mm f/2

I recently ordered the Pentax 50mm F/2 (M) series lens (paid nearly $50 shipped) or I also have the option to purchase the Rikenon P 50mm F/2 for $31.00 (shipped) what would you guys say is the BEST of these two lenses?

04-20-2013, 11:46 PM   #2
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Ive got the pentax one and find it wonderful.... build is solid.. pictures are shaaaarp and the bokeh is awessome I cant speak for tue rikenon
04-21-2013, 12:46 AM   #3
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That 50mm lens has the lowest reputation of all Pentax 50s, though I haven't tried it myself and I know it has it's fans. $50 seems expensive to me. For that price I think you should be able to get the f/1.7 version, which is superb.

I do have a Ricoh 50mm f/2 (though not the P version) and it's very good indeed. I believe they all have the same optical formula and mine is very sharp, even wide open. Be careful with the P version though - it has a Ricoh pin that will need to be removed or it may become stuck on the camera.

I would try to get a Pentax M 50mm f/1.7, they can be had very cheaply and will be better than the two above. Of the two you've mentioned here, I would go for the Ricoh.
04-21-2013, 02:14 AM   #4
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The Pentax has better build quality and lens coatings. The Ricoh is a tad sharper. With post processing I don't think it will make a difference. Also SEARS 50mm lenses are rebranded Ricoh - usually go for less on ebay.




Last edited by jkomp316; 04-21-2013 at 02:24 AM.
04-21-2013, 05:41 AM   #5
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One 'missing' feature on the Rikenons are half-stop clicks; every Pentax I've owned has solid stops between the numbered stops on the lens. Not a huge deal but nice to have in my book. I've owned several Sears and Ricoh fifties and found no issues at all with their optical quality.
04-21-2013, 08:49 AM   #6
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If you have a 50mm f2.0, I think there won't be much point in getting another. Maybe a f1.7 or f1.4, or one with odd rendering like the Helios 44-2.
No 50mm is terrible, but they can have quite different character. Thats why some people collect them
04-21-2013, 08:58 AM   #7
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I agree with Jonathan Mac - for $50 I would go for the M50 f/1.7, which is a superior lens. I can't speak for the Rikenon, but the M50 f/2 is an ok lens, & you should be able to find a nice copy for $25 or so.
04-21-2013, 09:47 AM   #8
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I was unsuccessful in finding one below f/2, I wouldn't be keeping both it's kinda one or the other, whichever is better.
QuoteOriginally posted by Jonathan Mac Quote
That 50mm lens has the lowest reputation of all Pentax 50s, though I haven't tried it myself and I know it has it's fans. $50 seems expensive to me. For that price I think you should be able to get the f/1.7 version, which is superb.

I do have a Ricoh 50mm f/2 (though not the P version) and it's very good indeed. I believe they all have the same optical formula and mine is very sharp, even wide open. Be careful with the P version though - it has a Ricoh pin that will need to be removed or it may become stuck on the camera.

I would try to get a Pentax M 50mm f/1.7, they can be had very cheaply and will be better than the two above. Of the two you've mentioned here, I would go for the Ricoh.
With the Ricoh, you said there is a pin that must be removed? Can you tell me a bit more about what you mean.?

04-21-2013, 01:39 PM   #9
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QuoteOriginally posted by Bcrary3 Quote
I was unsuccessful in finding one below f/2, I wouldn't be keeping both it's kinda one or the other, whichever is better.

With the Ricoh, you said there is a pin that must be removed? Can you tell me a bit more about what you mean.?
Have a look here:

https://www.pentaxforums.com/forums/pentax-beginners-corner-q/62194-ricoh-pin...ed-remove.html
04-21-2013, 01:47 PM   #10
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Seems like a simple enough fix. Bid on a Rikenon 50 1.7 for $19.99
04-21-2013, 02:22 PM   #11
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if your in there removing the pin - might as well remove the stop down lever too. i did this with my sears 50 1.7 so i can run it in Av mode on all apertures.
04-21-2013, 02:49 PM   #12
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What would removing the stop down lever do? Haha, sorta a stupid question there.
04-21-2013, 04:02 PM   #13
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QuoteOriginally posted by Bcrary3 Quote
What would removing the stop down lever do? Haha, sorta a stupid question there.
If you remove the aperture lever the lens loses the ability to do open aperture focusing...the aperture will stop down or open up when you turn the aperture ring. Just like an M42 lens set to M.
04-21-2013, 04:28 PM   #14
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Is this avoidable, or is it necessary for the lens to work properly without getting stuck on the body?
04-21-2013, 05:15 PM   #15
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QuoteOriginally posted by Bcrary3 Quote
Is this avoidable, or is it necessary for the lens to work properly without getting stuck on the body?
There is no need to remove the aperture lever unless you want it to behave like an M42 as @jkomp316 does.
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