one more thing: so, i couldn't help noticing the striations marking both batches of diana+ pinhole negatives. the bookcase image to the left is one of the more extreme examples, but i noted that even the images from the first roll (see below) all had single lines running down or across the images.
i'll admit that my care and handling of negatives leaves a lot to be desired but my mishandling rarely results in patterns comprised of more or less straight lines. it looks as though something scratched both rolls of film while they were in the camera. ironically, this was the first time i've used the diana+ when advancing the film didn't feel like a be-all, end-all struggle for advancement. otherwise put, most times when i've used the diana+ there have been stretches during advancement when i've been sure that the film will break. if anything, i'd expect striations when the advancement is tight.
so i'm not sure what's up with this as i've never seen these kinds of marks before. i was using arista edu ultra film (both 100 and 400 speeds) and i've used this film before--though perhaps not in the diana+. i checked the inside of the camera as well, but nothing looked suspect (or potentially scratchifying) there. so maybe it's the camera/film combo? i thought about putting some electrical tape on the edges against which the film passes (i was advised to do this with the holga when running 35mm through it). then again, i might try another round of diana+ pinholes tomorrow using a different kind of film--maybe color?--and see if the situation repeats itself. another diana+ mystery.