I was looking through a few Sensia slides last night,and noticed there was these dull white marks on the emulsion side. The marks are not even and appear in randoms places,they look like thin uneven lines going across the slide emulsion,sometimes a small swirl going off the frame,generally there are a couple of marks on each slide. Could this be drying marks i'm seeing?.
maybe... are these machine processed? If so, they could be some sort of artifact from a roller processor. The other issue is they could be the residue scum that is left when the film is quickly force air dried.
Yes you are correct a opaque white. I noticed that from frame 1-18 the slides are fine and no marks,yet the problem increased as each frame went on. The worst ones were from frame 28-34.