View Full Version : Inner reflections inside M6 - who knows the cure???
:bang: I've noticed such disturbing effect in my M6TTL - http://public.fotki.com/alpauk/teq-question/may06-23.html
It appears now and then with different intencity. One of my Leica-holding friends complins for the same... What can be done exept selling off that crap???? :bang:
Can you give a bit more information
- More pictures with the effect
- Which lens(es) does it occur with?
- Do you have a filter or hood mounted?
Mad_boy
I can't post more pictures right now, mb on Monday. As I guess, the effect mostly appears with Summicron 50/2 of previous version, that one with handel on the distance ring. There's no hood, and Rodenstock protection filter on.
P.S. I'm almost sure that this lens works OK on my M4-2...
That is not a reflection, that is a very clear light leak, possibly not even in the camera. I would put it on the lab, maybe the film casette, and just maybe the camera.
What I noticed is that the shape of it reminds leaf of iris diafragm of my 50/2...
I've seen references in the past on the 'net to internal reflections caused by that lens, the 50 with the finger tab. Someone I recall devised some kind of DIY fix with a ring of thin black paper inside the rear of the barrel. I've never heard of it with the latest version which is optically the same.
Dan States
06-18-2006, 16:10
Are you and your friend getting your films done at the same place? That is not in internal reflection. It is a sharply defined area of exposure. Flare, either from the lens or some internal part would be poorly defined at the edges.
I would suggest a test roll taken to a different shop. There is nothing inside a Leica M6 that would cause this.
There is another obvious light leak in the right middle of photo.
Are you and your friend getting your films done at the same place? That is not in internal reflection. It is a sharply defined area of exposure. Flare, either from the lens or some internal part would be poorly defined at the edges.
I would suggest a test roll taken to a different shop. There is nothing inside a Leica M6 that would cause this.
Dan, we live in different countries:) Leica's support engineer supposed it to be "seal is out of order".
I've seen references in the past on the 'net to internal reflections caused by that lens, the 50 with the finger tab. Someone I recall devised some kind of DIY fix with a ring of thin black paper inside the rear of the barrel. I've never heard of it with the latest version which is optically the same.
Alas, that's not the reason - everything is blackened inside the barrel...
Well, if that could be useful to anyone: according to advice of one profi in camera repare, I interchanged backdoors between my m6 and m4-2, up to this moment (3 or 4 films are shot) there is no flare...
Ronald M
10-04-2006, 12:15
It is not a light seal. People complain about the current 50 2.0 doing this in pictures AGAINST the light.
The fix is a thin cardboard circle placed behind the rear element. Cut a 2x3 proportion from the circle as large as possible. This leaves very small amounts of paper at the rectangle corners. BLACKEN. BS fix for Leica lenses, but what can I say.
If this doesn`t fix it , have the camera examined for leaks.
Gabriel M.A.
10-04-2006, 20:14
This is not in any way an "internal reflection", nor "flare", as you last stated.
Jaap is right, that's a light leak. Flare will not look like that.
Ronald M
10-05-2006, 05:43
Why not examine the camera yourself. I found a light leak on my 111f under the shutter counter.
You need a almost dark room and a penlight. Remove the bottom and shine the light all around the body and see if light enters. Pay attention to where the hands go as they sometimes cover leaks causing intermittent problems. OPen the shutter on B and look thru lens opening with the light on the back.
This was the case with mine. The sun only entered from the right and only if my hand did not block it.
This problem has been posted before and the marks you show were traced to the lens design of the last Summicron version 4 , 1987 or newer. The baffle solved the problem. I do not have the lens so I can`t comment from personal experience.
Goodyear
10-05-2006, 06:19
I agree it looks like a light leak rather than flare of any sort - but what about all this association with a particular lens? Is it a leak in the barrel of the lens?!
2 Goodyear - this shows up both with my 50/2 and 35/2.
2 Ronald M: I'm almost sure that it is light leak now. Espesially because it appears between frames, not in a single one. As I guess that tells that it happens not trough lens at all... I hope I'll find the reason.
Ronald M
10-07-2006, 11:20
If between frames, it is not the lens in all cases then. Do the penlight thing in semidark room and also tape over the the back door edges for a roll or two.
Try loading like a screw mount is loaded and you will not have to retape.
Mylar slide binding tape is lightproof and won`t leave residue, but use care with ANY TAPE ON PAINTED SURFACES. You may pull up the paint.
clintock
10-07-2006, 13:05
You said you cured it by swapping doors? Is the fuzzy seal of the suspect door intact? It's on the right as you look at the open door, so it would be above the sprocket wheel with the door shut. Mind you I'm looking at an M5 for reference, M3 has no such fuzzy business, so I don't know about the '6ttl so I should just shut up.
Send it to a reputable Leica repairmen and have him assess the problem. Or maybe it's bad karma....yours or the cameras.
Bob
Thanks, sounds reasonable. I'll move in that direction.
From the colour it looks like the leak is from behind that is through the film base e.g.
- through the door seals
- or into the sprocket region before the film is reversed
You could black electrician tape over
- the back plate top and sides
- the baseplate join with the body, all the way round
- the baseplate latch
- battery cover or self timer
- rewind control
- exposure counter
- speed dial, use lens for control
- shoe
The lens and mount should be ok and the viewfinder, lever wind and rewind are too difficult.
This is not silly if it were the baseplate you could replace.
Lastly two things
- do you have an ERC if so use it, and push a black nylon sock or scarf around the top of the case at the rear, and down the sides at the front.
- do the seals on the camera for the door seem ok, I don't know what seals a M6 should have?
Noel
2 Xmas: Thanks for stirring up my memory:) Your advice is almost like my repairer's one. If I had enough time and will:) But there are some questions to you - I'm not good enough in English to understand some details.
1. What's SPROCKET?
2. What's ERC?
And could you clarify a bit the first advice from "Lastly two things"?
THNX!
laptoprob
10-09-2006, 11:16
The sprocket wheel is the toothed film-transporting wheel.
How often does this sharp light occur? More on a single roll? Always at the end or the beginning?
I used to have a light leak in the bottom left corner, but that was just off the image edge: it started within the picture and extended fuzzily. That was a light leak from the back door.
This light leak is very sharp and is hard to imagine a cause within the camera.
I too would suspect the developing service.
good luck!
The sprocket wheel is the toothed film-transporting wheel.
How often does this sharp light occur? More on a single roll? Always at the end or the beginning?
I used to have a light leak in the bottom left corner, but that was just off the image edge: it started within the picture and extended fuzzily. That was a light leak from the back door.
This light leak is very sharp and is hard to imagine a cause within the camera.
I too would suspect the developing service.
good luck!
That was my thought too. Leaks I've had were not sharp like that. It seems to me the light is getting focused in some way, and then reflected and/or leaking onto the fillm.
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