Cannot remove name ring from 50mm Pentax-M f/1.4 lens :(!!

ohaya · 04-12-2016, 03:42 AM

I got another SMC Pentax-M lens in that has a clear rear lens section, but is there any way to get the glass out from that and put it into the one with the hazy rear glass?

It looks like the helicoid with the one I just may be kind of messed up (really tight) so I can't just use the entire rear section, so I have to try to just move the lenses.

Thanks,
Jim

**niceshot** · 04-12-2016, 09:04 AM

just switch the aperture mechanism over with the glass inside of it

ohaya · 04-12-2016, 05:46 PM

Originally posted by niceshot

just switch the aperture mechanism over with the glass inside of it

Hi,

Sorry, I kind of messed up my previous post. What I was trying to say was that the back section of the "new" 1.4, the one with the clear glass in the back section, is kind of messed up mechanically. So it's a catch-22 situation:

- I have one lens (the older one) that is mechanically good, but has hazy lens in the back section and
- the newer lens, which has clear glass in the back section, but the back section is kind of messed up (broken piece of plastic from somewhere)

If I could remove the glass from the back section, then I could move the glass to the mechanically good lens and get one good/clean lens, but there doesn't seem to be any way to remove the glass???

ohaya · 04-12-2016, 09:29 PM

I was able to get the back end section of the "new" lens working ok (I had to flip that ring that goes under the shiny end piece), so I swapped the focus ring, mount ring, and name ring from my old lens (the one with the hazy rear lens) and now I have one lens that is mechanically good and has clean lenses.

For the other one, I was able to bend the mount ring and the focus ring so that the mount ring could go in and the focus ring can still turn. No way to get the name ring in though.

Jim

**niceshot** · 04-13-2016, 02:08 AM

Originally posted by ohaya

I was able to get the back end section of the "new" lens working ok (I had to flip that ring that goes under the shiny end piece), so I swapped the focus ring, mount ring, and name ring from my old lens (the one with the hazy rear lens) and now I have one lens that is mechanically good and has clean lenses.

For the other one, I was able to bend the mount ring and the focus ring so that the mount ring could go in and the focus ring can still turn. No way to get the name ring in though.

Jim

congratulations please put up some pics

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
SMC Pentax M 50mm 1.4 Rubberized focus ring version???	sonicboom	Pentax SLR Lens Discussion	11	01-25-2012 03:48 AM
Pentax-M 1.4 50mm focus ring smoothness?	Abstract	Pentax SLR Lens Discussion	15	11-12-2010 03:43 PM
For Sale - Sold: [Worldwide] Pentax SMC-M 50mm f/1.4 Lens	wallyb	Sold Items	3	02-28-2010 03:32 PM

04-12-2016, 03:42 AM	#16
ohaya Senior Member Join Date: Jan 2016 Posts: 242 Original Poster	I got another SMC Pentax-M lens in that has a clear rear lens section, but is there any way to get the glass out from that and put it into the one with the hazy rear glass? It looks like the helicoid with the one I just may be kind of messed up (really tight) so I can't just use the entire rear section, so I have to try to just move the lenses. Thanks, Jim

04-12-2016, 09:04 AM	#17
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,564	just switch the aperture mechanism over with the glass inside of it

04-12-2016, 05:46 PM	#18
ohaya Senior Member Join Date: Jan 2016 Posts: 242 Original Poster	Originally posted by niceshot just switch the aperture mechanism over with the glass inside of it Hi, Sorry, I kind of messed up my previous post. What I was trying to say was that the back section of the "new" 1.4, the one with the clear glass in the back section, is kind of messed up mechanically. So it's a catch-22 situation: - I have one lens (the older one) that is mechanically good, but has hazy lens in the back section and - the newer lens, which has clear glass in the back section, but the back section is kind of messed up (broken piece of plastic from somewhere) If I could remove the glass from the back section, then I could move the glass to the mechanically good lens and get one good/clean lens, but there doesn't seem to be any way to remove the glass???

04-12-2016, 09:29 PM	#19
ohaya Senior Member Join Date: Jan 2016 Posts: 242 Original Poster	I was able to get the back end section of the "new" lens working ok (I had to flip that ring that goes under the shiny end piece), so I swapped the focus ring, mount ring, and name ring from my old lens (the one with the hazy rear lens) and now I have one lens that is mechanically good and has clean lenses. For the other one, I was able to bend the mount ring and the focus ring so that the mount ring could go in and the focus ring can still turn. No way to get the name ring in though. Jim

04-13-2016, 02:08 AM	#20
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,564	Originally posted by ohaya I was able to get the back end section of the "new" lens working ok (I had to flip that ring that goes under the shiny end piece), so I swapped the focus ring, mount ring, and name ring from my old lens (the one with the hazy rear lens) and now I have one lens that is mechanically good and has clean lenses. For the other one, I was able to bend the mount ring and the focus ring so that the mount ring could go in and the focus ring can still turn. No way to get the name ring in though. Jim congratulations please put up some pics