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07-17-2019, 08:49 AM   #1
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ME Super light leak?

Hey, so Iíve noticed that some of my recent rolls have white spots on them of the same shape. This usually happens on 1-3 non-consecutive shots somewhere around the middle of a film roll.
Is there something wrong with shutter, or how can I fix this?


---------- Post added 07-17-19 at 09:37 AM ----------

Strangely, the images wouldnít show up so here are the links:
Dropbox - 000041650023.JPG - Simplify your life - b&w
Dropbox - IMG_3505.JPG - Simplify your life - terribly underexposed color

07-17-2019, 01:12 PM   #2
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Welcome to the Pentax Forums!

Those are not light leaks, but it is hard to say what is going on here. A few questions:
  • What lens is being used?
  • Are you doing your own processing?
  • Are you using a hood?
  • Is there anything physically in the light path in the mirror box during exposure? This may be checked by direct examination with the film door open and with the shutter on "B".
  • Is the lens free of "stuff" internally that might be blocking light? Put the aperture ring at its widest setting and look into the back of the lens.
What makes diagnosis hard:
  • The dark at top and bottom of frame
  • The curved nature of the shadow at right and the fact that it is only on the right


Steve
07-17-2019, 01:20 PM   #3
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QuoteOriginally posted by screamuch Quote
Strangely, the images wouldn’t show up so here are the links:
Those are not image URLs per se, so the browser doesn't know what to do with them when placed within an image tag. The full explanation is rather involved, but it is enough to say that one can't link directly to dropbox for display on a web page other than theirs.


Steve
07-17-2019, 02:46 PM   #4
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ME Super has a vertical shutter which might be causing the dark upper right corner if it's slow like capping on horizonal shutter - just a thought but I think you need to have it CLA'd

07-18-2019, 02:22 PM   #5
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QuoteOriginally posted by stevebrot Quote
What lens is being used?
SMC 50mm f1.4 on bw and Zenitar 16mm fisheye f2.8 on color, but it's certainly not a lens problem.

QuoteOriginally posted by stevebrot Quote
Are you doing your own processing?
No, I do it at a lab I got recommended a lot. However, I'll ask them if there's a problem on their end.

QuoteOriginally posted by stevebrot Quote
Are you using a hood?
Is there anything physically in the light path in the mirror box during exposure? This may be checked by direct examination with the film door open and with the shutter on "B".
Is the lens free of "stuff" internally that might be blocking light? Put the aperture ring at its widest setting and look into the back of the lens.
No, no hood. There's nothing in the path of exposure, all the other pictures come out perfectly fine.

QuoteOriginally posted by stevebrot Quote
Those are not image URLs per se
I see. I'll try to properly attach an image with the same problem to this message.

QuoteOriginally posted by longbow Quote
CLA'd
Do you mean "Clean, Lubricate, Adjust"? Is it possible to do so at home (with help of google/youtube) or shall I find a specialist?

07-18-2019, 04:41 PM   #6
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QuoteOriginally posted by screamuch Quote
SMC 50mm f1.4 on bw and Zenitar 16mm fisheye f2.8 on color, but it's certainly not a lens problem.


No, I do it at a lab I got recommended a lot. However, I'll ask them if there's a problem on their end.


No, no hood. There's nothing in the path of exposure, all the other pictures come out perfectly fine.


I see. I'll try to properly attach an image with the same problem to this message.


Do you mean "Clean, Lubricate, Adjust"? Is it possible to do so at home (with help of google/youtube) or shall I find a specialist?
OK...the most reasonable explanation I might give is alien intervention, bad film, or possibly bad processing (motor oil in the minilab?) or perhaps an insect or other debris in the mirror box during the exposure. If you were doing your own processing, something called bromide drag* and/or a problem with the film reel would be a very real possibility. What does your lab say?


Steve

* Forgot...example is a positive. Bromide drag is light colored on the print.

Last edited by stevebrot; 07-19-2019 at 10:21 AM.
07-18-2019, 11:55 PM   #7
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QuoteOriginally posted by stevebrot Quote
What does your lab say?
I'll ask as soon as I get there. Won't be until Monday, most likely.
07-19-2019, 02:56 PM   #8
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Do you hand-roll your film?
Iíve seen crinkles in film cause things that shape, but I think they were light (itís been years...)

Thatís something that could happen in processing, too...
Is there anything weird on the negs in terms of creases or anything you can feel?

And do the adjacent negs show anything that might indicate that the issue happens outside of the camera? If everything ends at the edge of the frame, thereís not much way it could happen outside of the camera.

-Eric

07-21-2019, 01:55 PM   #9
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QuoteOriginally posted by TwoUptons Quote
Do you hand-roll your film?
Nope, I'm yet to get there

QuoteOriginally posted by TwoUptons Quote
Is there anything weird on the negs in terms of creases or anything you can feel?
I'll take a look at them tomorrow, I feel like it happened on 2 adjacent frames.
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