I was shooting color (E100GX) and B&W (Bergger 200) in a studio. All rolls were developed at a reputable lab in NYC. The color came back fine. The b&w film looked as if the edges (more on one edge than the other) were exposed to light - there are dark streaks along the edges. I thought there might be some sort of light leak (I use a Mamiya c330), but the color are fine. Also, there wasn't any "pattern" to my shooting - over two days, I shot color - then a roll of b&w - back to color, etc. This was also the first time I used Bergger - there aren't any marking on the processed film, i.e. frame number, film id. Any ideas? Is it me or the lab?