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Stacking problem? Help appreciated.

 
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mpan



Joined: 14 Sep 2015
Posts: 46

PostPosted: Sun Jun 16, 2019 1:06 pm    Post subject: Stacking problem? Help appreciated. Reply with quote

Can anyone tell me why these squiggly lines occur post stack. Also, if possible,how to make them stop. Thank you. Nikon d7200, cf 3x, pb-5 bellows, Zerene stacker,
[/img]
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Mike
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Scarodactyl



Joined: 14 Apr 2018
Posts: 200

PostPosted: Sun Jun 16, 2019 1:13 pm    Post subject: Reply with quote

I typically see these when there is dust on my relay lens.
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rjlittlefield
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Joined: 01 Aug 2006
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Location: Richland, Washington State, USA

PostPosted: Sun Jun 16, 2019 1:24 pm    Post subject: Reply with quote

It's definitely due to dust someplace.

See the explanation at https://zerenesystems.com/cms/stacker/docs/faqlist#my_output_images_have_worm_trails_why_is_that .

--Rik
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mpan



Joined: 14 Sep 2015
Posts: 46

PostPosted: Sun Jun 16, 2019 2:17 pm    Post subject: Reply with quote

Thank you, I'm cleaning it now
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Deanimator



Joined: 23 Oct 2012
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Location: Rocky River, Ohio, U.S.A.

PostPosted: Mon Jun 17, 2019 10:44 am    Post subject: Reply with quote

If you don't have a lighted loup, definitely get one. It really helps to see dust on the sensor.

One easy way to diagnose dust on the sensor is to look at your individual images. If you see a black spot on an image, track through the subsequent images and see if the spot moves. You'll find that if it does, the path will match the line in your stacked image.
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mpan



Joined: 14 Sep 2015
Posts: 46

PostPosted: Mon Jun 17, 2019 11:33 am    Post subject: Reply with quote

Thanks all, I've found the dust. as i've never cleaned a sensor before any advice?
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Joined: 23 Oct 2012
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Location: Rocky River, Ohio, U.S.A.

PostPosted: Mon Jun 17, 2019 12:47 pm    Post subject: Reply with quote

mpan wrote:
Thanks all, I've found the dust. as i've never cleaned a sensor before any advice?


  1. Be careful with the sensor.
  2. Run your camera's self-cleaning function a few times with the lens removed and the camera inverted so debris can fall out.
  3. Get a Giotto's squeeze blower. Blow onto the sensor with the camera inverted. If it's a DSLR, you will have to go into manual cleaning mode, which locks up the mirror. Be careful not to touch the sensor.
  4. Use something like SensorSwab Ultra for cleaning.
  5. Use Eclipse cleaning fluid. Some people say it's overpriced, but it works for me. It's not like you're going to be using gallons of it, only a drop or two per swab.

Follow the directions for whatever cleaning stuff you use and take your time.
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mpan



Joined: 14 Sep 2015
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PostPosted: Mon Jun 17, 2019 12:53 pm    Post subject: Reply with quote

Ok,Thanks so much!
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