JHAG Posted November 27, 2006 Share #1 Posted November 27, 2006 Advertisement (gone after registration) I recently gave a batch of film for scanning to my pro lab. Some of these films came back with tiny blotch (micro-beads like). On negatives, with my loupe, I cannot see nothing. When enlarging on screen, here they are, meaning they're not usable for large format printing. The lab seems reluctant to admit any problem coming from them. Could it be that their scanner had been dirty with specks of something:confused: or what ? Quote Link to post Share on other sites More sharing options...
Advertisement Posted November 27, 2006 Posted November 27, 2006 Hi JHAG, Take a look here Scanning problem or ?. I'm sure you'll find what you were looking for!
john_r_smith Posted November 27, 2006 Share #2 Posted November 27, 2006 If you can't see any problems on the negatives (and sometimes stuff will show up on a scan which you can't easily detect on the negs, even with a loupe), then the scans were faulty. Send a sample strip of negatives to another lab and get them scanned again, for comparison. John Quote Link to post Share on other sites More sharing options...
JHAG Posted November 27, 2006 Author Share #3 Posted November 27, 2006 Thanks John Well, on a series of neg where I have a large monochrome wall, I cannot see a single blotch on the neg, and I see a dozen of them on enlargement… Besides, I have 6x10 proofings of the pics : on the same wall, just nothing. I recently made dozens of film with that lens, which are clean. Testing the lens itself, it only has the usual odd tiny specks of dust every used lens has (mine is three years old) Quote Link to post Share on other sites More sharing options...
Zurenborger Posted November 27, 2006 Share #4 Posted November 27, 2006 Perhaps small dust particles in the scanner. I have similar findings sometiems when I scan B&W, eveidently nothing to be seen on the negatives but little blotches when enlarged from the scanner..... dust, even the smallest perticles cause lots of hassles when scanning B&W negatives on a film scanner I find. Somehow flatbeds work better for B&W Quote Link to post Share on other sites More sharing options...
frc Posted November 28, 2006 Share #5 Posted November 28, 2006 If it's this kind of things you call micro-beads, it's dust. Quote Link to post Share on other sites More sharing options...
JHAG Posted November 28, 2006 Author Share #6 Posted November 28, 2006 See for yourself. Image 1 : mainly on left side. Image 2 : mainly on upper right corner. It cannot come from the lens (Noctilux, almost new, many other pics absolutely clean). With the same lens, some negs are clean, some are not. And the specks are not always at the same place. Should definitely be film processing / drying turned bad. I'll see with the lab tomorrow. Quote Link to post Share on other sites More sharing options...
frc Posted November 28, 2006 Share #7 Posted November 28, 2006 Advertisement (gone after registration) Hi Sthan, Did you find out what it is? Being curious. Fr. Quote Link to post Share on other sites More sharing options...
JHAG Posted November 28, 2006 Author Share #8 Posted November 28, 2006 Yes, Fr. Thanks a lot. The lab will polish the neg with some dry product. They say they have sometimes this problem with Kodak films, because last bath (a tensio-active — is this the right term in english ? — which is supposed to wash out every fluid from the strips) leaves these specks instead. Apparently, it occurs very rarely on other films… They also said they did use another agent (from Agfa) on Kodak films, but this has been discontinued… A friend photographer in the US wrote me also this : "Try soaking in Hypo clear for a few hours, and then give them a dip in Photo Flo and re-hang to dry in a dust free area." Regards Johan Quote Link to post Share on other sites More sharing options...
tobey bilek Posted December 1, 2006 Share #9 Posted December 1, 2006 These are defects in the film emulsion or unfiltered crud from the processor that dried on the film. My hame processed C 41 has less, but they all have it. I can`t see them with a loope either. Scan with digital ICE if there are a lot and touch up the remaing few with photoshop or fix them at 200-300 % enlargement in photoshop. Digi cams get sensor dust so that is not a fix either. Quote Link to post Share on other sites More sharing options...
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