PhotographyToday.net

Discussions, Community, Learning

Carl Zeiss Tessar 2,8cm f8 LTM - Cleaning lens.

Share your advice about camera repair or ask a question.
alexvaras
Enthusiast
Enthusiast
Posts: 361
Joined: Fri Nov 03, 2017 3:01 pm

Carl Zeiss Tessar 2,8cm f8 LTM - Cleaning lens.

Postby alexvaras » Fri Feb 23, 2018 3:11 pm

Hello,

I tried the clean the haze of the lens but I could not remove the second front lens. Now the lens is better than before but still not as it should.

The lens is removed from the LTM from the front counter clockwise, doorstopper or just the hand as I did.
IMG_1265.JPG
IMG_1265.JPG (68.21 KiB) Viewed 958 times

IMG_1266.JPG
IMG_1266.JPG (67.4 KiB) Viewed 958 times

IMG_1267.JPG
IMG_1267.JPG (80.67 KiB) Viewed 958 times

Here its the lens without the focusing leica system.
IMG_1269.JPG
IMG_1269.JPG (33.17 KiB) Viewed 958 times

Outer ring out.
IMG_1270.JPG
IMG_1270.JPG (61.04 KiB) Viewed 958 times

IMG_1271.JPG
IMG_1271.JPG (108.63 KiB) Viewed 958 times

Ring retaining the first front lens out. I tried to remove the next before the second front lens but the doorstopper din't this time...
IMG_1272.JPG
IMG_1272.JPG (90.75 KiB) Viewed 958 times

Here I can see 9 aperture blades.
IMG_1274.JPG
IMG_1274.JPG (98.63 KiB) Viewed 958 times


If anyone has any idea how to get there without spoiling anything, please share :)

Thx for reading.
0 

PFMcFarland
Prolific Poster
Prolific Poster
Posts: 1611
Joined: Tue Apr 29, 2014 11:02 pm

Re: Carl Zeiss Tessar 2,8cm f8 LTM - Cleaning lens.

Postby PFMcFarland » Sat Feb 24, 2018 12:11 am

Here is where a spanner tool would come in handy.

PF
0 
Waiting for the light

alexvaras
Enthusiast
Enthusiast
Posts: 361
Joined: Fri Nov 03, 2017 3:01 pm

Re: Carl Zeiss Tessar 2,8cm f8 LTM - Cleaning lens.

Postby alexvaras » Sat Feb 24, 2018 12:18 am

I have it, and I tried to remove the ring near the aperture, but I prefered not to force a lot, plus this lens is before the aperture... Maybe its opened this way and I need an extra push...
0 

Julio1fer
Frequent Poster
Frequent Poster
Posts: 799
Joined: Tue Mar 25, 2014 9:31 pm

Re: Carl Zeiss Tessar 2,8cm f8 LTM - Cleaning lens.

Postby Julio1fer » Sat Feb 24, 2018 11:41 am

Alex, you may try to heat the lens assembly gently, say to about 40 C, to have thermal expansion working for you. Usually retaining rings are not ultratight, but anything can happen in old metal. The only way I know is using a spanner or equivalent tool, as you are doing.
0 

alexvaras
Enthusiast
Enthusiast
Posts: 361
Joined: Fri Nov 03, 2017 3:01 pm

Re: Carl Zeiss Tessar 2,8cm f8 LTM - Cleaning lens.

Postby alexvaras » Sat Feb 24, 2018 12:33 pm

I will try another spanner, just a metal bar crossing along the two spacers, I already took out the outer piece so only the lens remains, what I need is a circular wise with rubber to hold tight the lens, then I will loose that ring :D

It seems every item I disassemble something different is needed. I guess they had no ISO 9001 back in 1938.
0 

PFMcFarland
Prolific Poster
Prolific Poster
Posts: 1611
Joined: Tue Apr 29, 2014 11:02 pm

Re: Carl Zeiss Tessar 2,8cm f8 LTM - Cleaning lens.

Postby PFMcFarland » Sat Feb 24, 2018 10:37 pm

Patent laws come into play, thus we wouldn't have the joy of Voigtlander designs.

PF
0 
Waiting for the light


Social Media

       

Return to “The Fix-It Forum”

Who is online

Users browsing this forum: No registered users and 2 guests

 

 

cron

Login  •  Register