Quote Originally Posted by trexx View Post
My first post, way back at the start should have been
"This look like light scatter in Pinhole photography, was this a pinhole?"

I thought it, and should have added it to my questions of processing. When I was doing a lot of pinhole I saw them all the time. Even in when not pointed at a strong light source.

One thing maybe to prove this to you is that you can find the same pattern on different frames. Now one roll may not be enough to see, But on the hundreds of pinhole frames I have done I could see similar patters of black spots.
How might this occur?

Finely suspended dust particles inside the camera imaged by the infinite depth of field of the pinhole and reflecting light, like dust in beams of sunlight?

Less than perfectly smooth edges of the pinhole?

The first would lead to varying patterns, the second (if operative) would lead to identical patterns from picture to picture (when conditions bring it out). Your post was ambiguous. Are you saying the patterns of dots are in the same position from picture to picture (when conditions are right to create them)?