Rudi Gennari

38 minutes ago, Ruben Arce said:

You can use pretty much any M42 lens on the K3 without problems. I don't know where that guy got that info, specially when it's almost impossible to get factory details or service manuals for the K3s. The focal flange distance of the M42 mount is 45.46 mm VS the 45.50 that you are talking about that's a .04mm or 4 hundredths of a millimeter. Technicians consider +-.02 the tolerance for a correctly calibrated mount, so as you can see it doesn't make much sense. Now when technicians set the FFD of a camera mount, meaning the body not the lens they subtract .02 or .03 to the original FFD so the image falls right in the middle of the film.

You can use M42 lenses, Ks never have the right FFD on the mount anyways since they were not designed as professional cameras and they were not manufactured to high or strict specifications. A technician can do it for you, but unless that was the case just mount the lens and it will work

Thanks. Yeah that was one of my enquiried. I was afraid if I got a m42 lens like the popular Takumars, etc i wasn’t gonna be able to focus properly. Did you have any experience, could you recommend any lenses to go with the k-3?

Thanks! But what about all the rest of m42 lenses for Pentax? Are they not usable with the K-3?

Hi guys! I´m looking for some new lenses for my K-3 (m42 mount). I´m a new owner of the camera (modded to S-16) and the only lens I have now is the Meteor 17-69mm zoom. I´m on the hunt to buy some more lenses which I know they are affordable and good quality but I´m in a bit of a confusion as for which ones will work on this camera. I know it has an M42 mount, but what about the flange distance? The guy who sold the camera to me told me the only lenses that will work on the k-3 are the ones with a flange distance of 45.5. Now, I understand flange distance is the space between the mount and the camera sensor so I´m not sure how to look for it in a lens? I need help!

Also if any of you have tried any other lenses on the K-3, I would appreciate if you can share your experience. I was looking at the SMC Takumar 135mm, and one other wide angle but didn´t know what focal lenght, since the one I have makes vignette effect wide open at 17mm, since the camera is modified to S-16.

Any help will be appreciated. 

Thanks!

Hi guys! I´m looking for some new lenses for my K-3. I´m a new owner of the camera (modded to S-16) and the only lens I have now is the Meteor 17-69mm zoom. I´m on the hunt to buy some more lenses which I know they are affordable and good quality but I´m in a bit of a confusion as for which ones will work on this camera. I know it has an M42 mount, but what about the flange distance? The guy who sold the camera to me told me the only lenses that will work on the k-3 are the ones with a flange distance of 45.5. Now, I understand flange distance is the space between the mount and the camera sensor so I´m not sure how to look for it in a lens? I need help!

Also if any of you have tried any other lenses on the K-3, I would appreciate if you can share your experience. I was looking at the Super Takumar 135mm, and one other wide angle but didn´t know what focal lenght, since the one I have makes vignette effect wide open at 17mm, since the camera is modified to S-16.

Any help will be appreciated. 

Thanks!