M42-to-PK adapter with inner flange for auto-pin lens

hk300 · Joined: 30 Oct 2008 Posts: 1041 Location: Hong Kong

I have more M42 lens to Pentax K body adapters for lens with Auto-pin for sale.

Price is still the same: EUR13.5 / USD17 including registered airmail.

Gus Helios · Joined: 10 Feb 2009 Posts: 144 Location: Cali

Alex, I have a original and a knock-off m42-K... the original I can take out of the camera with my fingernail, the knock off requires a tool and even then was hit and miss.

Does your adaptor with the flange (brilliant idea) come off the camera as easy as the original or does it need a tool?

Thanks
gus

hk300 · Joined: 30 Oct 2008 Posts: 1041 Location: Hong Kong

spiralcity · Joined: 02 Oct 2008 Posts: 1207 Location: Chicago, U.S.A

Nesster · Expire: 2014-02-20

I use my finger nail, that works fine too.

Gus Helios · Joined: 10 Feb 2009 Posts: 144 Location: Cali

Thanks for the feedback everyone...

edumad

Poolhall · Joined: 25 Feb 2008 Posts: 1296

It is possible I did it with the Telear 200/3.5 that I got from Sichko, its not an auto lens but the same should apply. This is normally a Nikon fit lens but comes with an complete end to change it to M42. So firstly I changed the ends over, its only 4 small screws to do it, then put on a Roxsen infinity m42 -pk adapter, one of Alex's should work just as well. Then take off the screw that holds on the spring clip and remove the spring clip. Put the screw back in and use it to tighten the adapter to the m42 thread, but not too much or it will deform the thread. AS there is no clip now the lens will go on and off ok but can't lock, there are 2 solutions to this, 1) drill a hole in the bottom of the lens so that the PK mount locking pin will catch it, as in a PK mount lens or as I did, 2) instead of a larger hole, drill a small hole and use a small self tapping screw as a lug for the pk mount to catch. I find this is better but it will only work on some lenses that have enough clearance to do it. So I have a pk fit Telear 200 and the modification is removable. Very Happy

Orio · Expire: 2012-12-04

rawhead · Expire: 2014-04-29

The last M42->PK mount adapter I got has a problem where, after mounting on the camera, just a slight pressure on the lens will make it continue rotating clockwise. The fix, somebody pointed out, was to use a dremel to trim one of the blades, which I haven't gotten around to, and frankly, shouldn't be necessary to do on a finished product. Has this been fixed at all, or are the ones you have basically the same ones from before?

Problem documented here:

http://forum.mflenses.com/pentax-k-m42-adapter-with-inner-flange-t16928,highlight,m42.html

LittleSkink · Joined: 19 Mar 2010 Posts: 1

sorry to bump an old thread, does anyone know if these, or something similar of good quality is still available?

and how close to Pentax adaptor quality are they ?

thanks

hk300 · Joined: 30 Oct 2008 Posts: 1041 Location: Hong Kong

CarbonR · Posted: Fri Mar 19, 2010 5:48 pm Post subject:

As I'll order some of them (alex, check your mails Wink

) I'll be able to do a fast review, I have an Asahi Pentax, and a Pentax (both originals) Wink

Rard731 · Joined: 29 Jun 2010 Posts: 1 Location: New England, USA

I hope they're still available (Alex, I've sent you a private message). Thanks!

cardiff_gareth · Joined: 21 Jun 2010 Posts: 136 Location: Vale of Glamorgan

As I just put into a PM to Alex does anyone know if Meyer-Optik Gorlitz lenses need this mount with the internal flange for the aperture pin or are they ok with the cheaper mount that doesn't have this internal flange Question

Also are they being supplied now with the modification mentioned or is that something that the user needs to do themselves when it turns up Question

Ta all !

Gareth