JeTexas Posted October 8, 2012 Share #1 Posted October 8, 2012 Advertisement (gone after registration) I hate to post this here since it's an image from my Rolleicord, but I developed this roll of 120 TMax 100 last night, and I've got to do a roll of 35mm TMax 100 out of my M3 tonight. What did I do wrong to get these black dots along the right edge of all my negatives? I don't want to do the same thing to my other roll tonight. IMG_0001 by ffacker, on Flickr Link to post Share on other sites More sharing options...
Advertisement Posted October 8, 2012 Posted October 8, 2012 Hi JeTexas, Take a look here Black dots along edge of negatives. I'm sure you'll find what you were looking for!
adan Posted October 8, 2012 Share #2 Posted October 8, 2012 Not quite enough developer in the tank - so the top edge (right) only got developed by the foam on the surface. You're seeing "images" of the bubbles that were all that touched the film between agitations. Bubbles are air pockets - air won't develop film, thus leave undeveloped (dark) areas. Link to post Share on other sites More sharing options...
garysamson Posted October 9, 2012 Share #3 Posted October 9, 2012 If there is dried Photo Flo on the reel and especially if it's a plastic reel this could be the cause of your problem. Scrub the reel with a toothbrush and hot water and this should solve the problem. Link to post Share on other sites More sharing options...
250swb Posted October 9, 2012 Share #4 Posted October 9, 2012 The underlying image along that edge doesn't have any general fall off in density that I would have expected to see if there was not enough developer in the tank. Indeed there could be plenty of developer but a deep layer of bubbles. But again, it doesn't quite look like that either because they are very specific and normal agitation would have caused more of a fall off in density (of the negative) generally if it was frothing. Those bubbles look like they have either 'developed' over a long period without much agitation taking place, so are you using 'stand development', or they happened quickly with a strong developer solution and a short development time? An indication of your technique and process would be useful. But make sure your have rinsed all your mixing cylinders and reels and tanks in clean water after using a wetting agent, you have got to get rid of it before letting everything dry. A longer development time and a weaker developer can help, as would a pre soak that allows the developer to absorb more evenly, but then I'm guessing at your technique. Good luck. Steve Link to post Share on other sites More sharing options...
JeTexas Posted October 9, 2012 Author Share #5 Posted October 9, 2012 I mix Caffenol-C and then for T-Max 100 develop for 15 minutes, agitating the first 30 seconds, then 5 agitations on the minute. The tank was full, so I know that it wasn't lack of developer, but I did get distracted and let it sit for four or five minutes without agitation. That must have caused the problem. I didn't even remember that I'd done that until it was mentioned. I did the roll of 35mm last night, but I let the Caffenol-C mix sit and defoam a bit longer before starting and made sure not to miss any agitations. No dots. Thanks guys. I won't forget to agitate again, but I'm sure I'll screw something else up in the future. Link to post Share on other sites More sharing options...
250swb Posted October 9, 2012 Share #6 Posted October 9, 2012 Stand development is a great technique especially with something like Caffenol, but it seems it was more a Cappucino than an Espresso! It might be worth pouring it back into a measuring cylinder after you finish using it next time and gently shake it up just to see if it is frothing a lot. Steve Link to post Share on other sites More sharing options...
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