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03-06-2011, 02:34 PM   #1
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Have you met Mr. Sharp?

Another LBA tread I know, but as I recently acquired a lens I have been wanting for quite some time I just have to express my joy. The lens is a Ricoh Rikenon 105mm f/2.8 macro, and for those of you that spend far to much time on the internet you'll know this is the same lens as the Kiron/Lester/Viv.S1 105 macro. With the slight inconvenience of the Ricoh pin that I managed to remove after some troubles.

I've been acquainted with Mr. Sharp for some while now though some mutual friends like the K35/3.5, K135/2.5 and K50/1.2 but he has shown me a new side when introducing me to the Rikenon 105/2.8 macro. This is truly a sharp lens when stopped down.

Anyway, here's some pics. First of the lens itself and then shots taken with it. All taken with a K-5.



Fittingly one of the first pics I took with the lens was of the very pin that I had to remove to be able to use it.



I think I'll call him Midas, because this lens can turn trash into gold! (I don't want to strain the site so I'll just link to full resolution pics.)

Photo 1
Photo 2

It's not perfect, some CA and not that contrasty wide open but I think I can live with it. (irony intended)


Last edited by pjv; 08-15-2017 at 05:02 AM. Reason: remove swearing
03-06-2011, 06:25 PM   #2
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Very nice!
03-06-2011, 09:42 PM   #3
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Very nice Jim--why don't you introduce Mr Midas to the Macro Club, where he can hang out and show off a bit?
03-06-2011, 11:13 PM   #4
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QuoteOriginally posted by Jimfear Quote
The lens is a Ricoh Rikenon 105mm f/2.8 macro, and for those of you that spend far to much time on the internet you'll know this is the same lens as the Kiron/Lester/Viv.S1 105 macro.
I doubt this is true. Why would Kiron license their design to Ricoh? And the focusing ring of this Rikenon turns in the opposite direction from that of the Kiron variants - why would Kiron produce a lens in two different styles?

Not being a Kiron variant doesn't mean this lens is inferior or anything. Looks like a very nice lens and it should serve you very well.

03-07-2011, 03:06 AM   #5
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QuoteOriginally posted by Jewelltrail Quote
Very nice Jim--why don't you introduce Mr Midas to the Macro Club, where he can hang out and show off a bit?
Thanks, I'll do that as soon as get something worth showing of. Quick and dirty test shots are not very worthy.

QuoteOriginally posted by Laurentiu Cristofor Quote
I doubt this is true. Why would Kiron license their design to Ricoh? And the focusing ring of this Rikenon turns in the opposite direction from that of the Kiron variants - why would Kiron produce a lens in two different styles?

Not being a Kiron variant doesn't mean this lens is inferior or anything. Looks like a very nice lens and it should serve you very well.
The focus does turn the other way, and this one is limited to f/22 as opposed to f/32 (P setting might actually be f/32 but I haven't checked that). But these are things that can be done without changing the optical construction.

I have no idea why Kiron would license the design to Ricoh, but it does seem like they did so, as they did to Vivitar and Rollei. If it is indeed not the same design it is a bloody good copy
03-07-2011, 01:46 PM   #6
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QuoteOriginally posted by Jimfear Quote
I've been acquainted with Mr. Sharp for some while now.

I think I'll call him Midas, because this lens can turn trash into gold!


And I thought Canikon users were weird.

Last edited by pjv; 08-15-2017 at 05:03 AM. Reason: remove swearing
03-07-2011, 03:39 PM   #7
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QuoteOriginally posted by Mike.P Quote
And I thought Canikon users were weird.
Ah well you know how people always say you should get to know your equipment... this is just taking it one step further
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