V4 Summicron front mount
Old 1 Week Ago   #1
anu L ogy
Registered User
 
anu L ogy is offline
Join Date: Jan 2010
Location: RI
Posts: 241
V4 Summicron front mount

Hi All,

I had my summicron v4 serviced by leica last year, but i noticed that the front of the lens spins off center. Will this impact focus? I read on RFF that it is a common problem, but i dont know if it will impact focus or not. if it does, will aligning the white dot on the front of the lens with the rear of the lens dead center correct it? Is there any DIY fix for this?
Attached Images
File Type: jpg camera.jpg (33.5 KB, 37 views)
__________________
-Jim

http://www.flickr.com/photos/anulogy/
  Reply With Quote

Old 1 Week Ago   #2
anu L ogy
Registered User
 
anu L ogy is offline
Join Date: Jan 2010
Location: RI
Posts: 241
Just bumping to see if someone has any input.
__________________
-Jim

http://www.flickr.com/photos/anulogy/
  Reply With Quote

Old 1 Week Ago   #3
kipkeston
Registered User
 
kipkeston's Avatar
 
kipkeston is offline
Join Date: Oct 2007
Posts: 584
Mine does this. It's common I believe. Don't twist it.
  Reply With Quote

Old 5 Days Ago   #4
anu L ogy
Registered User
 
anu L ogy is offline
Join Date: Jan 2010
Location: RI
Posts: 241
Does the lens not being lined up impact the focus at all?
__________________
-Jim

http://www.flickr.com/photos/anulogy/
  Reply With Quote

Old 5 Days Ago   #5
Sykomor
Registered User
 
Sykomor's Avatar
 
Sykomor is offline
Join Date: Dec 2010
Location: Sweden
Posts: 73
Mine is also twisted and doesn't focus very well. I'm going to send it for service some day.
  Reply With Quote

Old 5 Days Ago   #6
anu L ogy
Registered User
 
anu L ogy is offline
Join Date: Jan 2010
Location: RI
Posts: 241
When you focus yours, do you align the white dots at the front and rear of the lens?
__________________
-Jim

http://www.flickr.com/photos/anulogy/
  Reply With Quote

Old 5 Days Ago   #7
Guth
Observational Documenter
 
Guth is offline
Join Date: Nov 2017
Location: Portland, Oregon
Posts: 130
Wow, referencing the image you've included, if the alignment of the lens hood matches that of the front of your lens (the dot on the lens hood lines up with the dot on the lens) then the components of your lens appear to be off by a very large margin. I must admit that it would bother me regardless of any impact it might have on the resulting images. I suppose it's possible that Leica has some sort of alignment tolerance that they find acceptable for lens assembly, but your situation looks quite extreme. If you move your aperture ring from one extreme to the other (f2 or f16) does the number align with the front dot?

My Summicron is a later version but overall things look the same from a functional standpoint. I only use the dot on the front of the lens as a reference for my aperture setting. For focusing I'm either referencing the back of the lens using the depth of field scale as it relates to the focusing ring itself or I'm visually referencing the rangefinder patch in the viewfinder. In this photo of my camera the dot you see at the front of the lens is actually the dot on the lens hood which covers the dot on the front of the lens itself. The lens hood has a tiny bit of play in it once mounted to the lens, but the lens itself is solid and the aperture reference dot does not move at all in relationship to the lens mount.

__________________
My RFF Gallery
  Reply With Quote

Old 5 Days Ago   #8
MJ Buckpitt
Registered User
 
MJ Buckpitt is offline
Join Date: Feb 2011
Posts: 54
This video takes apart the front end of the lens. It might offer some clues to the problem.

https://www.youtube.com/results?sear...ron+50mm+f2+v4
  Reply With Quote

Old 5 Days Ago   #9
Ronald M
Registered User
 
Ronald M is offline
Join Date: Aug 2005
Posts: 4,467
mount and dismount by holding the very rear of the lens . The front is glued on and you can break the glue. After repair of course
  Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 21:15.


vBulletin skin developed by: eXtremepixels
Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.

All content on this site is Copyright Protected and owned by its respective owner. You may link to content on this site but you may not reproduce any of it in whole or part without written consent from its owner.