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11-04-2014, 07:13 AM   #1
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Ricoh Rikenon 55/1.4 (M42)

This is my favorite bokeh lens. It has also one additional bonus it takes relatively sharp images wide open at infinity (on APS-C at least). So it is good choice for night cityscape photos. At f8 pictures are definitely sharp, but I the images from my K200D turned to dark. All the pictures below are wide open.










11-04-2014, 07:15 AM   #2
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Intriguing! Could you post an image of it wide open at infinity?
11-04-2014, 07:18 AM - 1 Like   #3
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I will do later!
11-04-2014, 11:44 AM   #4
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As promised some wide open shots +/- at infinity. They are maybe not super sharp, but they were made without shake reduction at higher ISO with 1/15 - 1/30 exposure time (BTW shake reduction can work with this lens, as it covers K-mount contacts, but you need to scratch back of the lens, which is painted). Have to say, that the originals look sharper to me.

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PENTAX K100D  Photo 
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PENTAX K100D  Photo 

Last edited by Piotrek K; 11-04-2014 at 01:46 PM. Reason: Uploaded better quality photos
11-04-2014, 12:26 PM   #5
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QuoteOriginally posted by Piotrek K Quote
BTW shake reduction can work with this lens, as it covers K-mount contacts, but you need to scratch back of the lens, which is painted
I'm not sure what you mean by this. Can't you just tell the camera the focal length of the lens and it works automatically?
11-04-2014, 01:49 PM   #6
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Some M42 lenses are too small to cover the entire K-mount - then the SR won't work. This is not a case for this one. Just one more sample.
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11-04-2014, 01:59 PM   #7
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QuoteOriginally posted by Piotrek K Quote
Some M42 lenses are too small to cover the entire K-mount - then the SR won't work. This is not a case for this one. Just one more sample.
Absolutely gorgeous!

11-04-2014, 02:44 PM   #8
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QuoteOriginally posted by bsamcash Quote
I'm not sure what you mean by this. Can't you just tell the camera the focal length of the lens and it works automatically?
He is confusing the need for electrical contact for Catch-in-Focus with SR.
11-04-2014, 02:45 PM   #9
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QuoteOriginally posted by Piotrek K Quote
Some M42 lenses are too small to cover the entire K-mount - then the SR won't work. This is not a case for this one. Just one more sample.
Not at all. SR works regardless of electrical contact. Catch-in-focus requires the contacts to be shorted.
11-04-2014, 02:52 PM   #10
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QuoteOriginally posted by boriscleto Quote
Not at all. SR works regardless of electrical contact. Catch-in-focus requires the contacts to be shorted.
Well maybe on newer bodies it works this way. On my K100D and K200D if I do not have metal lens base on the contacts I get no possibility to add SR settings.
11-04-2014, 03:02 PM   #11
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QuoteOriginally posted by Piotrek K Quote
This is my favorite bokeh lens
That is some beautiful bokeh! who knew?

Was this made by Mamiya or is this a totally different lens?
11-04-2014, 05:08 PM   #12
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I suppose it is different. But in fact to know this one should dismount two copies and compare...
11-04-2014, 05:21 PM   #13
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QuoteOriginally posted by Pablom Quote
That is some beautiful bokeh! who knew?

Was this made by Mamiya or is this a totally different lens?
The Ricoh 55mm was made by Tomioka.

Auto Rikenon 55mm f1.4 (Tomioka)

In the US they were sold under the Sears brand.
11-04-2014, 05:23 PM   #14
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Wow when it is really Tomioka, then I rate bokeh twice as good!
11-07-2014, 11:32 PM   #15
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And another one - at f8
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