Ricoh KR lense can use on Pentax Kx?


Mar 13, 2007
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#1
Please advise.. I'm noob . just starting to learn dslr.

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darrrrrrrrrr

Senior Member
Sep 19, 2006
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Singapore
#2
Ricoh KR mount means it is the K-mount that Pentax uses so yes it's probably going to mount and work right. However, you need to make sure that the lens does not have the dreaded "Ricoh pin" that will cause it to get stuck on the camera when it lodges into the slot for the screw-drive. It looks like this Ricoh lens doesn't have it though, since it looks like a purely manual lens. I've had a copy of this lens before and it didn't have the pin.

Please read this article (http://www.theatreofnoise.com/2008/05/ricoh-lenses-on-pentax-cameras-ricoh.html) and do a check before mounting it on your camera.

Once you've removed the offending pin (if any), you can mount it and use it like a Pentax-M lens. You have to set the custom function to permit use of aperture ring, and perform stop-down metering in Manual (M) mode by pressing the green button after selecting your desired aperture on the aperture ring. Or you can put the camera to Av mode but it will shoot the lens wide-open regardless of the aperture ring position.
 

pinholecam

Moderator
Staff member
Jul 23, 2007
10,944
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#3
Look for the pin as mentioned by Darrrr.
You can also 'destroy' the pin by stabbing at it until it lodges inside its recess and can no longer protrude out on the mount surface. Sticking it in with super glue or epoxy does the job as well.
 

Mar 13, 2007
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#4
no pin on my ricoh lense just mount can use already. Tested & working.
Found fungus in the lense. The fungus will migrate to camera body or sensor? How to remove it?

Thx for help.
 

pinholecam

Moderator
Staff member
Jul 23, 2007
10,944
88
48
#6
no pin on my ricoh lense just mount can use already. Tested & working.
Found fungus in the lense. The fungus will migrate to camera body or sensor? How to remove it?

Thx for help.
Frankly, too much work to do anything about it as its a $50 or less lens. :)

Better separate it from the rest of your stuff. Fungus, if it grows on the sensor, mirror, viewfinder would not be that hard to clean off since they are easily accessible.
 

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