Win a Pentax Limited Lens: Raffle Now Live!

ZombieArmy · 11-18-2017, 10:41 AM

I'm just looking to remove the spring and mount them directly to my M42 lenses directly since I lost the one I had for years on an excursion. I've just heard of horror stories of some of them letting off metal shavings into the camera and wanted examples that you guys have used.

zjacreman · 11-18-2017, 11:12 AM - **1 Like**

Removing the springs has been my strategy for my m42 collection. I've had the best results from the Pixco brand ones, which you can get for $5.79 apiece on ebay or $8.55 on amazon.

I bought some cheaper ones and they weren't as sharp at infinity. They were still the recessed kind, so I don't know how that happened. Manufacturing defects of a fraction of a millimeter. All of my Pixcos (I have 4, 3 more on the way) are as good as my relatively expensive Kipon, which is to say, my m42 lenses are as sharp at infinity as K lenses of similar quality.

If a lens has a tight focus or aperture ring you might run into some trouble with the adapter not having enough friction to stay in the body without the spring. I keep one around with the spring in place.

Kozlok · 11-18-2017, 11:20 AM

I use the fotodiox ones. I also remove the springs and latches. On some lenses they will have a light leak because of the cutouts for the spring. I fill those cutouts with epoxy and file smooth. My final advice is I leave the adapter on the lens, and over tighten it slightly on the lens so it doesn’t come off when focusing.

**twilhelm** · 11-18-2017, 12:33 PM

I also have a couple of the fotodiox. I paid $9.95 on Amazon for the last one I bought (last month because I misplaced one). I also have a Pentax one and can see no difference in usage when mounted.

Not a Number · 11-18-2017, 01:07 PM

It's not the spring that is mostly the problem but the screw holding it in is usually too long and cuts into threads on the lens. But you are safer still just removing the spring and screw rather than grinding the screw down.

**jlstrawman** · 11-18-2017, 02:54 PM

Originally posted by Kozlok

I use the fotodiox ones. I also remove the springs and latches. On some lenses they will have a light leak because of the cutouts for the spring. I fill those cutouts with epoxy and file smooth. My final advice is I leave the adapter on the lens, and over tighten it slightly on the lens so it doesn’t come off when focusing.

Originally posted by twilhelm

I also have a couple of the fotodiox. I paid $9.95 on Amazon for the last one I bought (last month because I misplaced one). I also have a Pentax one and can see no difference in usage when mounted.

+1 on Fotodiox. Have used them on M4/3, ASP-C, and FF cameras with great success.

11-18-2017, 10:41 AM	#1
ZombieArmy Pentaxian Join Date: Jun 2014 Location: Florida Posts: 3,210	Anyone know of a good cheap chinese m42 adapter? I'm just looking to remove the spring and mount them directly to my M42 lenses directly since I lost the one I had for years on an excursion. I've just heard of horror stories of some of them letting off metal shavings into the camera and wanted examples that you guys have used.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
For Sale - Sold: 3rd Pty M42, Helios-40-2, 28, 35, 85, 135, 200 and 450mm, M42-EF & M42-Nikon	MightyMike	Sold Items	80	12-29-2017 02:58 PM
Chinese M42 adapter turns over	gtxSeries	Troubleshooting and Beginner Help	29	05-27-2017 05:30 AM
Help needed from anyone who can speak Chinese and English, and anyone who live there.	Cosmo	General Talk	8	08-26-2009 11:38 AM
Pentax Mount Adapter K vs Chinese Mount Adapter	Vylen	Pentax SLR Lens Discussion	7	01-23-2009 01:03 AM
Cheap manual lens on cheap extension tube with cheap flash! Also cats.	pasipasi	Post Your Photos!	12	08-28-2008 04:43 PM

11-18-2017, 11:12 AM - 1 Like	#2
zjacreman Senior Member Join Date: Sep 2017 Location: Bogota Photos: Albums Posts: 120	Removing the springs has been my strategy for my m42 collection. I've had the best results from the Pixco brand ones, which you can get for $5.79 apiece on ebay or $8.55 on amazon. I bought some cheaper ones and they weren't as sharp at infinity. They were still the recessed kind, so I don't know how that happened. Manufacturing defects of a fraction of a millimeter. All of my Pixcos (I have 4, 3 more on the way) are as good as my relatively expensive Kipon, which is to say, my m42 lenses are as sharp at infinity as K lenses of similar quality. If a lens has a tight focus or aperture ring you might run into some trouble with the adapter not having enough friction to stay in the body without the spring. I keep one around with the spring in place.

11-18-2017, 11:20 AM	#3
Kozlok Pentaxian Join Date: Jun 2012 Location: Albuquerque Photos: Gallery Posts: 3,148	I use the fotodiox ones. I also remove the springs and latches. On some lenses they will have a light leak because of the cutouts for the spring. I fill those cutouts with epoxy and file smooth. My final advice is I leave the adapter on the lens, and over tighten it slightly on the lens so it doesn’t come off when focusing.

11-18-2017, 12:33 PM	#4
twilhelm Loyal Site Supporter Join Date: Feb 2009 Location: Florida Photos: Gallery \| Albums Posts: 2,369	I also have a couple of the fotodiox. I paid $9.95 on Amazon for the last one I bought (last month because I misplaced one). I also have a Pentax one and can see no difference in usage when mounted.

11-18-2017, 01:07 PM	#5
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	It's not the spring that is mostly the problem but the screw holding it in is usually too long and cuts into threads on the lens. But you are safer still just removing the spring and screw rather than grinding the screw down.

11-18-2017, 02:54 PM	#6
jlstrawman Site Supporter Join Date: Feb 2010 Location: Midwest US Photos: Gallery Posts: 1,058	Originally posted by Kozlok I use the fotodiox ones. I also remove the springs and latches. On some lenses they will have a light leak because of the cutouts for the spring. I fill those cutouts with epoxy and file smooth. My final advice is I leave the adapter on the lens, and over tighten it slightly on the lens so it doesn’t come off when focusing. Originally posted by twilhelm I also have a couple of the fotodiox. I paid $9.95 on Amazon for the last one I bought (last month because I misplaced one). I also have a Pentax one and can see no difference in usage when mounted. +1 on Fotodiox. Have used them on M4/3, ASP-C, and FF cameras with great success.

Anyone know of a good cheap chinese m42 adapter?

Win a Pentax Limited Lens: Raffle Now Live!