tag:blogger.com,1999:blog-14307486.post87192250439899175..comments2024-03-06T12:26:25.138+00:00Comments on theatre of noise: Ricoh Lenses On Pentax Cameras -- The Ricoh Pin Fixrobinhttp://www.blogger.com/profile/08743788064455642852noreply@blogger.comBlogger46125tag:blogger.com,1999:blog-14307486.post-10649337981446908052023-03-04T07:03:26.304+00:002023-03-04T07:03:26.304+00:00Vivitar 90-180 f4.5 Flat Field Zoom is a fine lens...Vivitar 90-180 f4.5 Flat Field Zoom is a fine lens with a tripod foot, goes to 1/2 lifesize. But it has the black flange extraneous to proper fit on Pentax K mount. I taped off the glass and carefully filed the black flange down to match up with Pentax. It works fine now. But I did not know any other solution, so I went with the file, which lets tiny metal bits go everywhere - thus taping off the glass. YMMV, and be very careful if this is the only way to get yours to work.Ammo Alamohttps://www.blogger.com/profile/01332330760602885655noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-90864524709476444342021-07-14T19:28:51.025+01:002021-07-14T19:28:51.025+01:00Thank you for this article! I felt some resistance...Thank you for this article! I felt some resistance when attaching an manual focus Tokina on my K-70. Rather then forcing it I found your article and removed the pin. Another lens for the collection!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-14307486.post-60859177873000638402021-04-16T22:01:28.685+01:002021-04-16T22:01:28.685+01:00Some problems never die... glad to be of help!Some problems never die... glad to be of help!robinhttps://www.blogger.com/profile/08743788064455642852noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-48657381320979594212021-04-16T16:09:16.491+01:002021-04-16T16:09:16.491+01:00You are a GODSEND! 13 years later. Thank you so mu...You are a GODSEND! 13 years later. Thank you so much, Brandygonz4@gmailhttps://www.blogger.com/profile/03285853349204273539noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-35894007504662207352021-04-16T06:05:51.928+01:002021-04-16T06:05:51.928+01:00Omg! Thank you so much for this. What is it, 12 ye...Omg! Thank you so much for this. What is it, 12 years later...? I just got a (new to me) pentax ks2. I ordered 2 vintage lenses. The first one is a perfect portrait 135mm prime; the 2nd....well, its the godforsaken sears 60-300mm. I have literally had this camera for 3 days! I have been FREAKING OUT! That is until I read this. I can not tell you the relief I have knowing I can actually get this lens off tomorrow AND fix it so I can keep it.<br />Phew! Now I can get to sleep. <br />THANK YOU!! Brandygonz4@gmailhttps://www.blogger.com/profile/03285853349204273539noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-31123139662617293562018-11-21T23:41:59.271+00:002018-11-21T23:41:59.271+00:00Still helping Pentaxians deal with the dreaded Ric...Still helping Pentaxians deal with the dreaded Ricoh pin after a decade! Thanks!Docrwmhttps://www.blogger.com/profile/12554731665996697813noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-33306509196405454002016-08-23T00:50:12.420+01:002016-08-23T00:50:12.420+01:00Thank you, thank you and thank you, saved me some ...Thank you, thank you and thank you, saved me some real frustration and "what the hell happened?" in my life with these directionsAesculus glabrahttps://www.blogger.com/profile/15564631858672717436noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-20005728731169806942016-06-10T01:32:39.838+01:002016-06-10T01:32:39.838+01:00I am glad that an eight-year-old post is still hel...I am glad that an eight-year-old post is still helpful!robinhttps://www.blogger.com/profile/08743788064455642852noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-89668937962063720982016-06-09T23:49:37.158+01:002016-06-09T23:49:37.158+01:00Thank you for very clear documentation of the pin ...Thank you for very clear documentation of the pin fix! Please add the Albinar (Sears) 28mm f2.8 in KR mount to your list of known problem lenses. I jammed one of these on my nearly-new K-30 body. To remove it, first I set autofocus to "off" so as to retract the screw drive into the camera body. Then, by aligning the lens with the known location of the pin and pressing it firmly against the bottom of the front edge of my workbench, I was able to open up a tiny gap between the back of the lens and the camera body mount. I inserted a jeweler's saw with a size 8/0 blade and, with about 5 strokes, cut cleanly thru the pin. After removing the lens, the next step was to lock the K-30's mirror up and vacuum out the lens cavity and the sensor. Net result: a tiny scuffmark on the K-30 mount, but zero damage. I then used your procedure to give this lens a vasectomy so that the problem will not repeat!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-14307486.post-53754799354960716142016-05-24T17:24:57.693+01:002016-05-24T17:24:57.693+01:00Though I have no experience with this, I BELIEVE t...Though I have no experience with this, I BELIEVE that you should have no problem. As you say, you might find it difficult to ever take the adapter off, but that should be your only worry. However, always when fitting strange lenses to cameras I check for any protruding parts or over-large flanges.robinhttps://www.blogger.com/profile/08743788064455642852noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-2192761263498070732016-05-24T15:47:30.142+01:002016-05-24T15:47:30.142+01:00I have two Rikenon P lenses that I would like to u...I have two Rikenon P lenses that I would like to use now on my Sony NEX digital camera. I have bought two K-mount to E-mount adapters and plan to put them on both the lenses and just leave them on. Do I need to worry about the pin issue then? Aside from not being able to remove the lens later, are there any other issues or damage I can do to the lens that I need to be concerned with such that I should still have the pin taken out or am I good to go?Gary Nielsonhttps://www.blogger.com/profile/07314745586699705769noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-64333916017517584452016-04-27T09:49:20.064+01:002016-04-27T09:49:20.064+01:00Great writing it is such a good and nice idea than...Great writing it is such a good and nice idea thanks for sharing your article .I like your post.<br />Thanks.....Ricoh lenshttp://machine-vision.in/noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-28996493412823395722015-09-28T13:37:00.466+01:002015-09-28T13:37:00.466+01:00Check out Pentax Forums online for current informa...Check out Pentax Forums online for current information on Pentax models and their features. robinhttps://www.blogger.com/profile/08743788064455642852noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-25944860798580921292015-09-26T03:22:18.932+01:002015-09-26T03:22:18.932+01:00What's a good Pentax that I can use old 35mm s...What's a good Pentax that I can use old 35mm sear ks lens with k mount I'm new to Dslr wanted a good used camera to buy so I can use the lens on. Can you recommend one? I will want one that's good for baby pictures and outside ones thanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-14307486.post-89102126136889995642015-05-10T14:17:19.106+01:002015-05-10T14:17:19.106+01:00I recently purchased a K50 with the anticipation o...I recently purchased a K50 with the anticipation of using older K mount lenses that I inherited. My problem was not being able to mount the two KR Sears prime lens. It would start to engage but quickly met resistance, which I was afraid to force past. After reading this work around I looked for the dreaded pin an saw it.. After removal they both mounted without issue. Thanks for the tip and note that these pins may prevent older lens from mounting smoothly!!Anonymoushttps://www.blogger.com/profile/14474859346770275294noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-69150921996999207852014-04-04T18:22:22.507+01:002014-04-04T18:22:22.507+01:00Interesting... I have never had that problem. Stil...Interesting... I have never had that problem. Still using this same screwdriver six years later! But thanks for the tip.robinhttps://www.blogger.com/profile/08743788064455642852noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-73627758390453449962014-04-04T01:45:13.314+01:002014-04-04T01:45:13.314+01:00I bought the #0 Phillips like you said but it does...I bought the #0 Phillips like you said but it does not fit the screws of the lens I had. Then I found this warning about Japanese made lenses and how the Phillips #0 DOES NOT fit the screws ... a JIS type srewdriver is required. Read more here: http://www.pentaxforums.com/forums/114-maintenance-repair-articles/119344-cross-head-screws-caution.htmlAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-14307486.post-16006523714677568172013-08-22T03:16:03.332+01:002013-08-22T03:16:03.332+01:00I run the "OrphanCameras.com film camera web ...I run the "OrphanCameras.com film camera web site. When I'm not scanning, buying and posting manuals, I shoot. I do use digital and a few of my film lenses were KR... stuck them on the digitals and they would get stuck... your solution was very easy.. A decent small screwdriver and my older KR now work perfect on my digital and Pentax AF cameras. Plus these KR lenses are cheap ! ! Just tried it on two lenses and I get a perfect exposure.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-14307486.post-72900876944482623052013-04-21T15:15:48.203+01:002013-04-21T15:15:48.203+01:00Thanks Lisa for writing! It's good to know thi...Thanks Lisa for writing! It's good to know this article continues to be useful five years on...robinhttps://www.blogger.com/profile/08743788064455642852noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-55433656468634120712013-04-21T00:11:47.551+01:002013-04-21T00:11:47.551+01:00Thanks for this! Just bought a Viv 28-200mm f3.5 f...Thanks for this! Just bought a Viv 28-200mm f3.5 for a song and read about having to cut the flange and remove the screw.The screw was already cut and I took the 3 screws off and removed the flange.Easy peasy!Thanks again!<br />lisaAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-14307486.post-26249216834497122752012-08-14T16:00:34.063+01:002012-08-14T16:00:34.063+01:00You are so right! I should have mentioned in my ar...You are so right! I should have mentioned in my article that it's best to do all these operations on a large black cloth or other surface. One simple method is to put a black sheet on a bed, so that a depression forms in the middle where the weight of your gear is. This can catch any small parts that pop off.robinhttps://www.blogger.com/profile/08743788064455642852noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-90987060564336827862012-08-14T10:20:17.039+01:002012-08-14T10:20:17.039+01:00Excellent advice on the pin removal. One thing to ...Excellent advice on the pin removal. One thing to watch for on some Sigma 24mm (and other) lenses is that when you remove the lens mount it can release the aperture ring (directly below) and the small ball bearing that sits below it (to create the aperture stop positions as you turn the aperture ring). This ball bearing sits on a small spring and needs to be kept there when you reassemble the lens. If you're lucky there will be a bit of grease to hold it in place. If you're unlucky it will fall out and dissapear cos it's so small. You can replace it with another of course.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-14307486.post-62673624827542712322012-07-06T20:36:01.536+01:002012-07-06T20:36:01.536+01:00The German scrwdriver may be the equivalent of a J...The German scrwdriver may be the equivalent of a JIS (Japanese Industrial Standard) screwdriver which, unlike an American Phillips screwdriver, has vertical pressure faces and does not "cam out" at high torque. The "cam out" of a Phillips is achieved by a slope of the contact surface and Phillips screws are made to match. This is great for automatic assembly machines. However, this slope puts all the pressure on the top edge of a JIS screw, overstresses the metal edge and soon destroys the screw head if the screw is very tight at all.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-14307486.post-21532956853409043662012-01-31T01:57:37.126+00:002012-01-31T01:57:37.126+00:00Thanks for that specific information, which just m...Thanks for that specific information, which just might help another poor soul!robinhttps://www.blogger.com/profile/08743788064455642852noreply@blogger.comtag:blogger.com,1999:blog-14307486.post-69523816445399035142012-01-31T01:19:34.139+00:002012-01-31T01:19:34.139+00:00I made the near-fatal mistake of putting an old ma...I made the near-fatal mistake of putting an old manual focus Sears 28mm 2.8 lens on my Pentax K20D. It got stuck and I had the same scary experience many others have reported--the Ricoh pin issue. The repair shop tried but couldn't get the lens off, so after reading around on the Net and being encouraged by this blog, I enlisted a friend to help. We put the camera on its back on a folded towel on the counter. I held down the lens release button on the camera with one hand and toggled between AF/MF with the other. He used a .0025 feeler gauge, inserted at about 4:00 when viewing the mounted lens. He slid the gauge back and forth and in less than one minute the lens was off. It worked! I hope this might give others, who may be hesitant, the courage to go for it. I've learned my lesson. No more Ricoh pin lenses for me! Thanks for posting this article, Robin.Anonymousnoreply@blogger.com