4/25/2024 0 Comments Spots on my photos![]() will almost certainly cause spots on the image.No matter how careful you are, it’s inevitable that at some stage you’ll end up with dreaded dust spots on your camera sensor. OTOH, contaminants, such as undissolved chemical powders, metal-filings, spatter of liquids on the dry film, suspened debris in processing solutions, etc. It either dissolves away completely, or remains as an overall tint.īesides, a purple or magenta-coloured spot in the positive would be caused by a greenish-coloured spot on the negative. Neither will an anti-halation backing be left in small spots on the film. Poor bleaching never, IME, results in small distinct spots, and certainly not purple ones. The (brownish) silver masking left behind prevents the correct colour from being scanned or printed, but re-bleaching and fixing (or blixing) will usually return the film to normal. And the accompanying illustration is definitely not typical of under-bleached film.Īn exhausted bleach bath will result in an overall fog that might well be patchy, but not distinctly spotty. The Bleach and fix steps simply remove the opaque silver image that's formed during development. The dyes are formed by the colour developer alone. I don't know how much C41 processing the author of that Olympus article has done, but a lack of cyan dye would definitely not be caused by under-bleaching. This article suggests that purple spots could be caused by inadequate bleaching: ![]() Last comment, I promise, Kodak used to have a related document, I don't find it on their website, but a copy of AE-22 is here SomethingĮlse that I'm wondering about - if humidity is high enough to grow fungus on film, is the Bronica also carrying fungus/spores that can easily Magazine attaches, or perhaps even try to shoot with the camera (mostly) in a plastic bag with the lens poking out a hole, etc. If it IS fungus growth in the 120 film, and moisture is still the suspect, you might try either plastic tape around the seam where the film The second item is, obviously, to see if another lab has the same problems. The first item is to see if you can do things before fungus has aĬhance to grow. Shoot a second roll normally and send to a different processing lab. I think I might try two things: 1) in one day, tear open the foil wrap of a roll of 120 film, load and shoot the roll, then ship it for processing. Moisture (more so than the gelatin?) and aids the growth of fungus? If it's exposed to the same conditions, the only obvious difference is in the backing paper should we expect that the backing paper absorbs For example, why isn't it on your 35mm film? I'm almost always skeptical of things until I get a little more evidence or plausible explanation. Hi, it sounds like they are saying that it's mold (or fungus) on the film, which I have no experience with, but I guess it sounds plausible. But my bets would be on the processor as the culprit, and I'm kinda guessing it will be something that you can wipe On every roll, id try a different lab to see if they get it. You say this doesn't happen with your 35mm film, only on the 120, so I wonder, do you get them processed at the same place? And if so, is it the same machine machine used? If it happens very frequently, like Know what this would mean, but it certainly could give a clue about where to investigate.) For example, do they always happen near one end or on one side of the film? (I don't Now if I didn't find anything obvious, I'd start looking at the pattern of the spots (you indicated that it happens frequently). Happened after the wet part of the processing (otherwise it would have come off in the processor). If you can clean it off, then it almost certainly And if it IS a foreign material then it's probably possible to guess where it came from. If residue, can it be cleaned off, and that sort of thing. ![]() If I had to handle this, first thing I'd do is examine with a magnifier to see if there's an obvious residual material or disruption Somehow allowing some sort of liquid to drip in there (or in the magazine) I think it's much more likely that something happened at the processing lab.Īt one time I used to handle a lot of troubleshooting of film/processing problems. Since you're shooting 120 roll-film, the only time the film isn't protected by tightly wrapped paper is while it's in the camera. Like Glen said, it seems to be actual droplets getting onto the film. Unless you are unwinding your rolls in a darkroom, or getting water inside your camera somehow, or this sort of oddball thing. Hi, I'm pretty doubtful it's anything you did.
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