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Thread: White spots on paper.

  1. #1

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    Question White spots on paper.

    Hi guys,

    I did some direct positive paper shots and some weird tiny white spots show up on the developed prints. Might it be a problem with my chemicals? Not long enough fixing? Could the water I'm using be the problem?

    Here's how the spots show up on the scan.You can't see them when you hold the photo.

    Thanks for the input!

    Click image for larger version. 

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  2. #2
    Vaughn's Avatar
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    Re: White spots on paper.

    If the spots are sharp and the size of dust spots, then that may be your answer.
    "Landscapes exist in the material world yet soar in the realms of the spirit..." Tsung Ping, 5th Century China

  3. #3

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    Re: White spots on paper.

    Hmm yeah. The spots are sharp (see my scan). I developed in trays, tiny dust particles might be an explanation.

  4. #4

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    Re: White spots on paper.

    Culprits to look for:

    Dust (a lot of it, by the look of the scan) on the paper when exposed.
    Dust (-"-) when scanning.
    Fixer or other chemical dust getting on the paper before processing.
    Not well-mixed developer with particles floating around in it still.

    In any case, it seems to be a case of lack of cleanliness. Clean up your loading/processing and this should go away.

    Best,

    Doremus

  5. #5

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    Re: White spots on paper.

    Thanks Doremus! I think I can rule out dust while loading it because my holders were freshly cleaned and I was really clean and careful loading them. My guess would be my freshly set up darkroom in the basement didn't settle down yet and particles got into the trays.

  6. #6

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    Re: White spots on paper.

    I am thinking dust on before loadind is still the likely cause.

    If your change tent isn't spotless there is your problem.

    I wipe mine down on the inside regularly plus Have a damp cloth on the inside to hopefully attract most of the dust.

    Film appears to develop a static charge at times, so any little dust is drawn to it.

    If it came from within your darkroom after processing you should be able to rinse the film again.
    If the spots are still there and have not moved you then know for sure that it was there before taking the image.

    Oh, I also often have dust attach it's self to my darkslides in the field. When that happens I use a squirt of lens cleaner and the lens cloth to clean it before sliding it out.

  7. #7

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    Re: White spots on paper.

    That's a great tip with the tent. I load my film in the dark without a tent, I wiped the surface I worked on with anti-static wipes before taking out the paper and the cassettes. Do you think I should use a dark bag instead of doing in the open?

  8. #8

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    Re: White spots on paper.

    If I had a dust free dark room available I would use it over the tent.

    The damp cloth trick still works in any room.
    Some automotive paint booths still use the same idea today, dampening the walls before the paint job.

  9. #9

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    Re: White spots on paper.

    McGirton,

    You said "you can't see them when you hold the print".

    I used to see white spots on scans which were not white spots on the print. They were reflections of the surface of the silver gelatin emulsion.

    I got rid of them by shooting prints on a copyboard with two lights polarized one way, shots taken through a polarizing filter set the other way to cancel out reflections.

  10. #10

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    Re: White spots on paper.

    I'm confused by the apparent (to me) terminology:

    ...spots show up on the developed "prints"...

    ...spots show up on the scan...

    ...can't see them when you hold the "photo"...

    Would you plz clarify?

    After posting it seems Bill may have it figured out.

    Quote Originally Posted by McGirton View Post
    Hi guys,

    I did some direct positive paper shots and some weird tiny white spots show up on the developed prints. Might it be a problem with my chemicals? Not long enough fixing? Could the water I'm using be the problem?

    Here's how the spots show up on the scan.You can't see them when you hold the photo.

    Thanks for the input!

    Click image for larger version. 

Name:	Screen Shot 2015-11-07 at 09.06.15.jpg 
Views:	82 
Size:	46.0 KB 
ID:	141947

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