Hasselblad light leak

[PVia]

Yet another light leak thread here, but...

I bought a 500cm a while ago and the A12 back needed a seal, so I installed it myself (via Dick on eBay). The next roll was perfect, problem solved, or so it seemed. This weekend I went out shooting, developed the roll today and found the first 10 shots perfect, but the last two (11 & 12) have a "leak" mark/streak on them, right side of the frame, emulsion down.

The one thing I forgot to do when loading the film was make sure the film was UNDER the retaining clip. So, most likely, the film sat on top of the clip as it traveled through the camera. Could this have caused problems?

 

[Q.G.]

Could, yes.
But ...

The clip is on the side where the V-notches are. The left side of the frame, emulsion down.

Is it only a streak, or is focus messed up too (i.e. are you sure you haven't loaded it under the clip?)

Can you show us a scan of the frame?

It is entirely possible that the 'new' seal is bad also.
Whether it shows up, and when, of course also depends on whether (and when: how) light hits the dark slide slot. With some luck, you could go with a bad seal without noticing any ill effects for quite a while.

So the first thing i would do is open the thing again, take everything out, inspect it, put it back in again making sure that everything is seated properly, and run a test.

 

[PVia]

Thanks, QG...yes, the clip is on the V-notch side, thanks for that.

You can see the negatives and a positive here and here.

Note also the fogged upper and lower borders of the frame, which I think was caused by the film sitting on the clip, plus the line on the rebate btw the two frames.

The sun was just out of the frame on the right side, but I don't think this is flare, do you agree?

 

[jeffreyg]

I use a Hasselblad 500cm and a 503cxi and have interchanged the backs at times and never experienced your problem. The pictures you posted show an uneven border as well. I don't think it is flare because lens flare would appear different. Is it possible this occurred during processing the film as opposed to exposing it? I don't think it had anything to do with the clip which holds the film flatter. If the film wasn't flat it would result in a focus issue. My guess is a possible shutter (not the one in the lens) problem, a processing problem or as you suspect the seal. However, if it is the seal why would it only be two frames?

 

[dentkimterry]

Doesn't look like a light trap problem. Something else going on here.

 

[Q.G.]

Could be flare, yes.

Have a look at this:

Sun just outside the frame (you can tell by the reflections on the water on the right hand side where it was).
Pure flare. Some internal reflection, though i haven't figured out where or how.


The line between the frames in your posted samples is light passing above/below the little roller in the film gate. Not unusual with strong light.

I can't rule out that the film was running over the clip, and that that helped create what you got. But i don't think it was.
Really looks like flare to me.

 

[PVia]

I should add that I was not using a hood or a compendium...and for those two frames I was in full sun as opposed to the others on the roll.

Also, the uneven (fogged) border is seen on almost all the frames of the roll. My guess is that the film clip issue had something to do with that.

I guess I'll have to shoot another roll, shooting away from the sun but with it shining on the dark slide slot, and some shots with the sun just out of the frame again.

But this time I'll make sure to load the film under the clip!