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Bruce Osgood · Jun 8, 2016

The attached negatives are from a Bronica GS-1, Prisim Finder and held for verticle composition. The flare is not unique to this roll but appears frequently and I can't figure out where it is coming from. I believe it is on the same side of each film and can creep deeper into the image.

jeffreythree · Jun 8, 2016

Looks like a light leak from a loosely rolled spool of film or not shielded from bright light.

Ian Grant · Jun 8, 2016

jeffreythree said:
Looks like a light leak from a loosely rolled spool of film or not shielded from bright light.

I agree, flare doesn't affect the edge outside the image area.

Ian

paul ron · Jun 8, 2016

looks like a light leak. orient the negative to how it sits in the camera. that will be the seal thats failing.

tedr1 · Jun 8, 2016

Examine the film holder closely for the condition of the polymer seals around the edges where the case closes together. It is common to find the polymer deteriorates over time (decades) and crumbles away, this can happen very slowly so is not noticed at first. The remedy is to replace the seals.

Sirius Glass · Jun 8, 2016

If the dark slide goes in the same side as the flare, then the light seals need to be replaced.

gone · Jun 8, 2016

Good advice here. If it's light leak from a loosely wound roll that you opened the camera in daylight to reload or unload the film, the problem will be on the last shots and become less obvious as it progresses down toward the first shots. If it's not on that part of the roll, it's dark slide or other types of back light leakage.

Bruce Osgood · Jun 9, 2016

ah ha! As momus says, "Good advice here." Yes and thank you all.

I'm leaning with the light leak edge being caused when loading or unloading. I don't want to think of seals as they're not easy to find (if at all).

I'll know better in a couple of days. Thanks again

MattKing · Jun 9, 2016

Bruce Osgood said:
I don't want to think of seals as they're not easy to find (if at all).

Have you contacted Jon Goodman?

paul ron · Jun 9, 2016

you can buy self stick foam seals by the sheet from microtools or a kit for your camera from jon goodman. its very easy to do yourself

btw, take the lens off and fire thebody so the mirror is out of the way. put a bright !ight inside the lens mount and inspect the back in a darkened room to see where its leaking. it just may be the darkslide baffel but i dont know how the film is orientated in your magazine.

Bruce Osgood · Jun 10, 2016

Matt and Paul,
I did contact Jon Goodman a few months ago when I first got the camera to see about his checking it out and I don't remember his reply and can't find the email. So I don't think it was positive. I am checking into Microtools and see what I can find out about their products.

DWThomas · Jun 10, 2016

At one time Jon Goodman sold a sort of generic kit of various thicknesses and widths of pre-cut strips plus a few self-adhesive fabric items. I worked from one of those on my SQ-A. (I also used bits from it on a Canon AE-1 and Yashica TRL.) I vaguely recall that he stopped offering that for some reason, but (being optimistic here) perhaps if he doesn't make a specific kit for the GS-1 he could be talked into supplying some material.

People with patience have also sliced up craft foam and mouse pads and such to get strips. Haven't tried it, but with a steel straightedge and a sharp Exacto knife it could be possible.

Bruce Osgood · Jun 10, 2016

DWThomas said:
.
People with patience have also sliced up craft foam and mouse pads and such to get strips. Haven't tried it, but with a steel straightedge and a sharp Exacto knife it could be possible.

Gotta love it.
Thanks DW.

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