I've been using the same tank and reels for about 5 years now--and suddenly in the past three weeks or so, I've been getting blotchy, bubble-like shapes at the same edge of each image on the roll. I've never had this problem before--ever. It's not the camera--film from a Mamiya C330 and a brand new Hasselblad 501CM both exhibit this little "problem". Here's what I'm using:(posted 8892 days ago)Ilford Pan-F 120 film Paterson reels and tank (generally with 2 rolls at a time, 1 litre) Ilford Ilfosol-S, 1+14 dilution (as directed by Ilford) school-supplied stop bath Ilford Universal Rapid Fix 1+4 dilution school-supplied clearing agent
I'm prewashing for 30 seconds with constant agitation, then processing for 6 minutes @ 68F (standard), with 4 inversions every minute (as per Ilford documentation). I normally only rap the tank once, right after I pour in the developer; however, in my recent state of desperation, I've begun rapping the tank after every set of inversions. It doesn't help. Stop, Fix, etc. are all standard, and I have never experienced any other problems involving chemistry.
I'm beginning to go insane...I'm ruining roll after roll of film; it's a good thing I'm not professional yet. If anyone would like to SEE what this looks like in an attempt to diagnose, I will be MORE than happy to scan in some negatives so you can see what's going on. Thanks in advance for any help!
Ian Frearson