dougcee
Member
Hi, new member here!
Quick question. I am now the owner of a nice clean Canon 7. All working fine except one thing. The rangefinder works as it should and is clean, but there is a noticeable double image all the time on the patch, even when split images have converged. Alignment or mirrors de-silvering?
Thanks!
Quick question. I am now the owner of a nice clean Canon 7. All working fine except one thing. The rangefinder works as it should and is clean, but there is a noticeable double image all the time on the patch, even when split images have converged. Alignment or mirrors de-silvering?
Thanks!
02Pilot
Malcontent
Is it a vertical double image? If so, you just need to adjust the vertical alignment of the RF.
dougcee
Member
O2, it is vertical and horizontal. It's frustrating because the rest of the camera is just great. I haven't run a roll of film through yet, so I'll see if it focuses OK the way it is.
There is a local repair guy who said it might be mirrors going south when I described the problem to him over the phone.
Thanks for your input!
There is a local repair guy who said it might be mirrors going south when I described the problem to him over the phone.
Thanks for your input!
02Pilot
Malcontent
So the images never line up properly? More than likely it's just a combination of vertical and horizontal adjustment. If the mirror was shot, the image would be hard to see, not out of alignment.
dougcee
Member
Well, there always seems to be a faint but noticeable double image even when the main images merge. It's usable I guess, but always the slight horizontal and vertical shadow.
Imagine looking at a sharp 3 dimensional letter T that was against a wall and casting a horizontal and vertical shadow less than the letter's own thickness. That's what it's like.
Thanks O2!
Imagine looking at a sharp 3 dimensional letter T that was against a wall and casting a horizontal and vertical shadow less than the letter's own thickness. That's what it's like.
Thanks O2!
02Pilot
Malcontent
OK, I think I understand what you're describing. I suppose it could be a mirror issue, but if you can focus accurately without too much distraction from the double image, I'd be inclined to just leave it alone and shoot it.
dougcee
Member
Yes, I'm inclined to agree. I'll see how the first roll of film looks and if good I'll probably just deal with the minor irritation. Appreciate your help on this 02!
DavidC
Established
ghost image
ghost image
What you describe is called a ghost image. Canon rangefinders mostly the 7 series seem to uniformly suffer from this ailment. Whether it is the mirror design I don't know. Even my latest Canon 7Sz suffers from this problem although to a lesser degree. That is why Leica rangefinder patches are so good--no flare and ghosting.
ghost image
What you describe is called a ghost image. Canon rangefinders mostly the 7 series seem to uniformly suffer from this ailment. Whether it is the mirror design I don't know. Even my latest Canon 7Sz suffers from this problem although to a lesser degree. That is why Leica rangefinder patches are so good--no flare and ghosting.
shawn
Mentor
Take the cover off and clean the prisms in the rangefinder. It made a big difference on mine.
https://www.youtube.com/watch?v=w7diog_cxus&
Shawn
https://www.youtube.com/watch?v=w7diog_cxus&
Shawn
Swift1
Mentor
Ghost images and zombie threads...
davhill
Canon P
With a back-silvered mirror (as most glass mirrors are) you can get a secondary reflection from the face of the glass, especially as the glass ages. I expect the shadow image is caused by this. I do not know if old glass can be cleaned to restore (remove) this or not.