35mm Lens light leak??

[joho]

a problem with light reflections ?
the white dots are reflections from the f/stop diaphragm ...
35mm jupeter with filter---
could the filter reflect off the lens ???
or a light leak from the lens ???

 

[Dali]

What makes you think it comes from the lens?

 

[Hunter_Compton]

These look like holes in a shutter curtain

 

[reddesert]

There are similarities in the distribution of bright spots between the two images, which suggests a common set, like pinholes in the shutter curtain as Hunter_Compton suggested.

The bright pentagonal spots in the second image are images of the lens aperture, not reflections off it. This more commonly happens when you get flare from out of focus highlights or light sources, like the sun in/near the frame causing internal reflections in the lens and an out of focus ghost image. The slightly odd thing is that pinholes in the shutter curtain are typically close to in-focus, because the curtain is so close to the film and far from the lens. However, the Jupiter 35mm has a very large rear element that is very close to the shutter curtain, so maybe it can illuminate the pinholes in a way that casts the holes out of focus onto the film. Anyway, it should be easy to test for pinholes with a flashlight. You have to test in both the unwound and wound states.

 

[joho]

I will do some tests other lens, BUT ! still think it is that lens - curtains in camera where replaced 2000.

 

[koraks]

still think it is that lens

I see no way in which a lens would produce this defect.

Shutter curtains was also my first guess.

curtains in camera where replaced 2000.

So maybe in 25 years they wore out. Disappointing, perhaps, but things happen.

 

[250swb]

I think the difference between the two shots is perhaps accounted for by the length of time between exposures. A long time and the shutter leak produces hard edged spots like the image on the left, a shorter length of time (and also in the shade) and the shutter leakage produces softer ghost spots as on the right.

 

[koraks]

I think the difference between the two shots is perhaps accounted for by the length of time between exposures. A long time and the shutter leak produces hard edged spots like the image on the left, a shorter length of time (and also in the shade) and the shutter leakage produces softer ghost spots as on the right.

Mostly aperture setting. Smaller aperture = smaller spots.

 

[250swb]

Mostly aperture setting. Smaller aperture = smaller spots.

What do you mean by 'smaller', I think the photo on the right has the 'smaller' spots, and that is shot in the shade, so are you saying the OP was shooting wide open in full sun and stopping down for the shade?

 

[koraks]

that is shot in the shade, so was the OP shooting wide open in full sun and stopping down for the shade?

It's not about the aperture during taking the photo, obviously. It's the aperture that was set on the lens between frames, when the film was behind the faulty shutter curtain.

Left: smaller, sharper and more intense/brighter spots due to smaller aperture and long or high-intensity exposure.
Right: larger, more fuzzy and evidently "aperture-shaped" (ca. f/5.6?) spots due to larger aperture.

 

[250swb]

It's not about the aperture during taking the photo, obviously. It's the aperture that was set on the lens between frames, when the film was behind the faulty shutter curtain.
View attachment 404108
Left: smaller, sharper and more intense/brighter spots due to smaller aperture and long or high-intensity exposure.
Right: larger, more fuzzy and evidently "aperture-shaped" (ca. f/5.6?) spots due to larger aperture.

You aren't really making any sense. If the lens was stopped down walking around in bright sunlight I think we'd see even more detailed evidence of the aperture blades if the shape of the spots are important. Maybe the OP was in the process of walking around and burning holes in the curtain, but it is still time related, a longer time between shots and it's likely more holes get burnt.

 

[koraks]

Maybe you should think about this for a day or two before deciding whether it makes sense. It sure does, but you're evidently not understanding it yet.