I'm encountering a really really weird situation right now. I have an old Franka Rolfix 6x9 folding camera. It's in great cosmetic and mechanical condition. Few weeks ago, I shot a roll of HP5 400 pulled to 200 and after I developed it, there were light leaks along the edges of the film. I have posted about this. Details here: http://www.apug.org/forums/forum147/...ght-leaks.html
I went on a trip to The Wave, Vermillion Cliffs few days ago and shot 2 rolls of RVP50 and 1 roll of Ilford FP4 125. **BOTH ROLLS WERE LOADED AND SHOT IN SIMILAR LIGHTING CONDITION (Bright outdoor, loading the camera with my back facing the sun, so film was loaded in my shadow). And here's the weird part, the color film (RVP50) came out perfect with no light leaks at all. But the FP4 125 came out like last time, with light leaks along the top and bottom edge of the film. Color film was processed professionally at my local lab. B&W film processed myself (both times, HP5 400 and FP4 125). I can assure you that this is not a procedural issue. I have developed hundreds of rolls of film and never screwed up one (yes, not even the first time.. well.. except a few times where I didn't think I got any good photos and just threw away the film).
So can anyone explain this to me? Light leaks on B&W film but not on the color one?
P.S. both film were purchased from the same place (B&H) at the same time. New film. Unopened.