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I've shoot some Ilford HP5 + on a Mamiya 645 1000s for the first time. I developed the film with Ilford DD-X (1 + 4), ilford stopbath and fixer on a Paterson tank.

After scanning the negatives i noticed some strange things all over the images, big white dots (most prominent in the sky) like rain.

Scanned with Epson V800 / Silverfast 8

Can anyone help me trying to find out what can cause this things?

Raw scans,

(Full images where the "artifacts" are more visible)

Test image 1

Test image 2

EDIT:

Details of the images above,

Circles - Normal dust for me

Rectangles - The "artifacts", stripes of white dots

enter image description here

enter image description here

And now the first image of the roll, where the "artifacts" are less prominent

enter image description here

  • 1
    These seem like regular dust particles, and I encounter them regularly. However I'd check the negatives for small dark spots, just in case it is emulsion damage. – timvrhn Oct 13 at 8:10
  • Hello, thanks for the reply. I don't have a light table (yet) to check the negatives. When i put then in front of a light they seems ok. I've cleaned the holder, the scanner but the dust is a plague. In your opinion the dust particules are in the negatives? How do i clean them? Not all photos have this problem. And some have more than others. – nioxys Oct 13 at 9:29
  • For me, the repeating rectangular pattern is more problematic than the random dust. They point toward the scanner as a source of a problem. Scan something with no processing variation (clean ND filter?) to reveal any repetitive artifacts. – Stan Oct 13 at 14:23
  • I once had similar spots on a roll of refrigerated film that I used while it was still cold. Condensation formed and showed up as random white spots. – Mike Sowsun Oct 13 at 17:26
  • @Mike Sowsun, I have the roll in the fridge but I only used it a day after I took it out. Stan, I will try to do a test scan. – nioxys Oct 13 at 21:18
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These spots seem like typical dust spots. I encounter them regularly and are usually quite easy to remove in Lightroom or Photoshop. In the darkroom, it is more of a hassle. After meticulous dust removal pre-exposure, dust may still show (significant) spots on the print. Here, retouch kits are used.

You won't ever get rid of dust. You worded it nicely, it's a true plague. Depending on how the film was handled and stored, you'll get more or less dust, and the distribution can also vary between frames. There are however a few methods of reducing the amount of dust in your scans and prints:

  1. If you develop film yourself, let the film dry in usually humid area such as the bathroom. The humid air catches a lot of the dust that's floating freely in the air and lets it settle on the ground, so it won't fall on your film.
  2. Use pressurised air canisters to blow the dust from the film strips and scanner glass. Alternatively, you can use hand-powered dust blowers.
  3. Use microfiber cloths to wipe the strips and glass clean. Static free cloths are a good option. I know Ilford uses or used to sell them.

If you are unsure whether you are dealing with dust or other artefacts, it is always useful to resort back to the negatives or positives. Check these for spots, this may help you in figuring out what is causing the artefacts you are seeing.

EDIT

The streaking you are referring to seems like slight bromide drag. Bromide drag can happen when the bromide in the film emulsion overpowers the developing agent. Solutions: either properly invert the tank when developing (so don't use the rotating stick), or use a stronger developer solution.

  • I will try to clean the negatives and scan them again. – nioxys Oct 13 at 13:02
  • If I were you I'd just remove the spots post-scanning. Like I said, you won't ever get rid of dust. If you found my answer useful, please don't forget to accept it by clicking on the check mark below the downvote button! – timvrhn Oct 13 at 14:22
  • @nioxys I have edited my answer conform your question – timvrhn Oct 13 at 14:33
  • I will shoot another roll and compare the results. Thanks – nioxys Oct 13 at 21:23
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If you are referring to a relatively small number of white dots on the enlarged/scanned neg this is dust, and the other answer addresses this. You never altogether get rid of dust.

However it looks as if you have at least one other problem, although it might be a scanning artifact: the sky in the second image has vertical bands of light and dark in it. If this isn't an artifact from scanning it would indicate some kind of problem during development or, possibly (but very unlikely given how close to each other the striped are) some kind of light problem.

You often get streakiness like this if you are not agitating well enough during development.

(Patterns due to light generally have a periodicity either repeats per neg (if there's a straightforward light leak) or the same as how tightly the film is wrapped on the roll, if the roll has been exposed to bright sunlight (and in that case it will probably be much more apparent on negs at one end of the roll than the other. Neither of those things looks to be the case here.)

  • 1
    Hello, thanks for the reply. I've edited the post with a detail of the part of the images that i not consider normal, the white strips with white dots. The red circles in the image means "normal dust" for me and the rectangles the artifacts. I've developed myself the roll and used the rotating tool of the tank to agitate. The last image of the post is the first of the roll. Those stripes with white dots is what you consider to be perhaps a problem in development? – nioxys Oct 13 at 13:01
  • I think you have identified dust and 'something else' correctly, but I'm unsure now that the 'something else' is a development problem. it might be, but I'm not sure. – user82065 Oct 13 at 13:45
  • I'm not sure what it is either. I'll try to see the negatives on a light table. – nioxys Oct 13 at 21:14

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