Strange Photo Plus Results...

[AlanG]

Advertisement (gone after registration)

Euginio,

 

This may be of interest to you and others who encounter this problem:

 

I've brought up the same question over at RF here:

 

http://www.rangefinderforum.com/forums/showthread.php?t=45870

 

I think the most plausible explanation came from a member named 'x-ray'. He said:

 

quote:

 

"It's not x-ray exposure but is the shutter not capping when you wind the last partial frame. When you wind the shutter and film on the last frame and if won't wind to a complete frame that you can expose then rewind the film the shutter doesn't cap properly and there's a small slit that allows light to strike the film. Your film is EXACTLY what happened to me. It only happened some times and was only when the camera would'nt wind the last full frame. "

 

unquote.

 

Kind Regards,

 

Peter

 

This sound very plausible to me and explains everything.

 

Looking at how the fog is sharp on one side and fades on the other, rewinding may be when this occurs. It also makes sense as you would stop and start when rewinding with a knob and it would be dependent on the f stop and brightness of the scene where the lens is pointing while rewinding. And it explains why the line is so consistent rather than varying due to the brightness of the subjects in the scene that it appears in.

 

You may have this "condition" more often than you think but maybe you rewind with the lens cap on, at smaller apertures or in darker conditions.

 

I don't know why winding partially to try to squeeze out an extra frame would pull apart the shutter more than normal winding, but maybe it does. Perhaps your camera always has a slight slit when you pull on the advance lever, but this only causes a problem when partially wound as that would leave the slit over the film opening.

[peterv]

Thanks for all the answers!

 

I'll be away and off-line for the weekend and shoot a few more rolls to test the above rewinding theory.

 

I'll check in again on monday.

 

Have a nice (photo-) weekend,

 

Peter

[rob_x2004]

Havent been able to speak with Aust importers service department yet, but this is what is in the invoice description.

 

Technicians Comments:

 

Dismantle unit.

Replace light seals.

Seal leak at DX code flex strip.

Reassemble, clean and test.

 

Service Unit.

[peterv]

Havent been able to speak with Aust importers service department yet, but this is what is in the invoice description.

 

Technicians Comments:

 

Dismantle unit.

Replace light seals.

Seal leak at DX code flex strip.

Reassemble, clean and test.

 

Service Unit.

 

Very interesting Rob.

 

Didn't think the MP as a DX code flex strip. Or has it?

 

Peter

[peterv]

Hi all,

 

didn't get to shoot a lot over the weekend, but retrieved a 'missing' roll from my wife's handbag...

 

While scanning I encountered this phenomenon below...

 

It's not always there, but it's always on the edges of a frame. (both images are cropped)

 

Do you think it's the same or a related problem?

 

Or is this something different?

 

Thanks, Peter

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

[rob_x2004]

On the flex strip? Hoping someone can tell me.

 

On those images, I had them very early on and think it is the same problem, that is, if it is on the left hand or right hand edge of frame. At first and not knowing any better I thought it was just normal for Leica cloth shutters or something to do with my scanning and neg curl, and so I made do.

 

But then the problem started migrating across the frame, and appeared in colour film that was developed by a lab, so I took another look at it.

 

Anyway, I should be fixed now, and on a positive note, after sevice viewfinder is clearer than it ever was. I've never seen a viewfinder like it in my life. Surprised they dont come like this out of the box from Solms.

[Michael-IIIf]

Advertisement (gone after registration)

 

Strange that it only happened on this roll, though.

 

Maybe this roll was shot in bright daylight and that's enough to penetrate the malfunctioning shutter.

 

Try a test roll. Shoot half of it in bright daylight with your normal way of cocking the shutter, and the other half by placing the lens cap on each time.

[frc]

A similar problem occurred on one roll.

The ones before and after have no sign of it.

As it seems to be the same problem, how can changing film make this phenomenon appear and disappear?

Or are we dealing with the same symptom caused by an other failure?

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

[rob_x2004]

Spoke by phone to the technician who repaired my MP.

 

His most likely was, the brass flex that seats the gold ISO pins is not light sealed, and that it runs up behind the rangefinder. Under certain circumstances light entering the rangefinder bounces round till it finds the gap.

 

His reasoning was that the images showed a burn fading bottom to top in the prints I sent, that the film being inverted, it was likely that the light is entering the film chamber somewhere towards the top, in the shape of the gap to the flex. Apparently it was a known phenomenon seen in some M6, but the first he had seen.

 

He said it was not likely to have come from the lens side, nor was it likely to be from half cocking a shutter, sticking or otherwise, at the end of a roll. The problem needed to be on the film chamber side. He could he detect direct light leaks.

 

All my cameras light seals were replaced as a matter of course, and the flex was sealed with black wax, which is not done in the factory.

 

Hope that helps.

 

 

 

 

frc,

 

Your marks seem the same just not as wide, faded at the top of frame. I was wondering looking at my prints, whether the alternate lines were from burns that carried through from the film in the layer above in the take up spool. I often see a definite crisp burn, then a faded burn, then a crisp burn again. I thought it was all random but it could be the circumference of the roll on the take up spool. Or it could be the direction I point the camera when rewinding or exposing. Take your pick.