Forum: Film Processing, Scanning, and Darkroom
03-10-2022, 08:45 PM
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What I have done in the past with a camera with a light leak is position unexposed film from once around the take up spool to once around the supply spool and then let the camera sit around for a few days. With a TLR, starting with a fresh roll and with the camera covered with a dark cloth advance to frame #2. After leaving the camera exposed to light for a few days without taking any pictures, again cover the camera (except for the red window obviously) advance the camera to frame #5. You can then take the remaining photos as normal. When you get the processed film back position it in the camera with frame #2 in position. Any dark spots on the film indicate the location of of a light leak. I am not familiar with the Yashica 635. If it has a red window it should be covered with black tape except when advancing the film.
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Forum: Film Processing, Scanning, and Darkroom
03-10-2022, 08:23 PM
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Seeing the film is also fogged between frames makes me think it is most likely to be the film door. I can't imagine a light leak from sticky leaf shutter could reach that area of the film consistently.
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Forum: Film Processing, Scanning, and Darkroom
03-10-2022, 12:32 PM
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The leak is not likely 1a, and is probably a seal on lower left corner if my guess about orientation is correct. Leak/fog appearance can vary based on ambient light and duration. Some of the frames appear to be fogged over broader area - the border or clear area should be consistent for the whole roll some appears to be fogged over the length of the frame - that could be shadow on the posted pic, but... you can test/locate by using opaque tape over the suspected offending spot(s).
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Forum: Film Processing, Scanning, and Darkroom
03-10-2022, 12:02 PM
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The first rule for light leaks is:
1a) if the image of the leak is strongly confined to the exposed frame, then the source of the leak probably comes from the lens-side of the camera
1b) if the image of the leak covers the borders and gaps outside the exposed frame, then the source of the leak probably comes from the back-side of the camera
The second rule is:
2a) if the image of the leak is on the bottom of the exposed frame, then the source of the leak probably on the top of the camera
2a) if the image of the leak is on the top of the exposed frame, then the source of the leak probably on the bottom of the camera
The third rule is:
3a) if the image of the leak spreads all across the exposed frame, then the source of the leak probably in the door or hinge.
3a) if the image of the leak spreads along the edge of the exposed frame, then the source of the leak probably on the edge of the camera.
Finally, tracing a leak means thinking like a photon (which is a useful skill for any photographer!). That means thinking of all the place light might get in, the path it takes, what other things in the camera might block the light, and where it ends up on the film.
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Forum: Film Processing, Scanning, and Darkroom
03-10-2022, 11:51 AM
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IF the light leak appears in the same area of multiple frames, then it's probably a light leak in the film chamber door. The lens when recording the image onto the negative will flip the image both vertically and horizontally, so if the light on the neg/print shows up in the top right corner, the leak is coming from somewhere in the bottom left of the door as you hold the camera with the lens facing forward.
Inspect the inside of the door for a dent or missing foam etc. The pressure plate should be parallel to the back.
Another possibility is that leaf shutter is 'sticking' and not closing completely. It may just need to be "loosened up" a bit. Without film, just take lots of 'shots' so that the shutter goes through many operations and that may loosen up the blades enough.
If the light leak appears in different areas of the negatives, then that could be 'user error', but from the one example you posted, it doesn't look like that.
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Forum: Film Processing, Scanning, and Darkroom
03-10-2022, 11:25 AM
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Please find a way to show the film strips including the border/edges and details of the processing.
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Forum: Post Your Photos!
07-20-2021, 01:16 PM
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I have a hard enough time with birds much less the 3000 species of dragonflies.
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Forum: Pentax K-5 & K-5 II
07-19-2021, 04:42 AM
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This deal was clearly much better. Enjoy your new K5 and the Sigma 17-70! Manfrotto tripod is really the icing on the cake.
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Forum: Post Your Photos!
07-03-2021, 02:36 AM
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Aye I know what you mean, not from 1725 kinda old... :lol::lol::lol:
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Forum: Canon, Nikon, Sony, and Other Camera Brands
05-01-2021, 05:57 AM
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This question comes up even with native use of older k mount zooms. The answer varies a lot. As the previous person posted the most effective is setting out exactly to the focal length you use. That’s pretty Time consuming if you are using the zoom with frequent focal length changes. Others have advised to set to the longest or shortest length. Finally some advise to use the middle ground - picking a focal length in between the shortest and longest length. This last seems the most likely to have the least negative impact and most benefits unless you spend most of your time at one end or the other.
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Forum: Canon, Nikon, Sony, and Other Camera Brands
05-01-2021, 05:46 AM
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The actual focal lenght that you are going to shoot.
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Forum: Welcomes and Introductions
04-30-2021, 02:22 PM
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I've been a Pentax user for decades, starting with an ME-Super film, to a Kr, K3, K1 and next week, a K3 III ! For past several years started volunteer work with Raptor Migration and taking photos of the birds and that amazing natural spectacle while helping Hawk Counters here on the Straits of Mackinac between Michigan's two peninsulas. I also enjoy railroading, both prototypical and scale model.
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Forum: Welcomes and Introductions
04-27-2021, 07:41 PM
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are we resurrecting the old dead threads here?
I know everyone needs to get the magic number "6".
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Forum: Welcomes and Introductions
04-27-2021, 06:26 PM
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I would hope he uses a long telephoto to get those photos.
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Forum: Welcomes and Introductions
04-16-2021, 02:09 AM
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Welcome from Hampshire. What region are you in?
Lens repair info always interesting to read, so any contributions greatly received.
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Forum: Welcomes and Introductions
04-16-2021, 04:06 AM
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Welcome to the forum from Lancashire. The M 80-200 is a very good lens (my travel preference on the K-1).
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Forum: Pentax Forums Giveaways
04-14-2021, 11:47 PM
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Restrictions: - this raffle is open to all forum members worldwide
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