I'm not even sure if the thread title accurately describes what we're looking at here, because I'm not even sure what to call this "distortion" (the only term I can think of). Maybe some of you guys might know or if there is another thread or site that had a similar/same issue and it got resolved you can point me in the direction. I'm not even sure what terms to search, so I apologize if this has been talked about earlier. Essentially there is some weird marks on my (scanned ) photos which cause things to look out of place. This originally occurred on one photo (the first attachment) back in June. The photo is of an atrium in a shopping mall, and with all the steel & glass architecture, I figured it was originally just something on the windows or something like that. I revisited the site myself shortly after to discover there was nothing there. I shrugged it off as maybe something that was removed either by people or nature (depending on if it was outside or inside). Considering it was just 1 photo (despite being one I quite liked), I just let it be. In July, I started noticing it even more, but it still wasn't common. Most rolls wouldn't even have anything of this sort. In hindsight, I'm not quite sure why I didn't start looking into this then, but oh well. Last night, ridding photos of dust from a photoshoot, I discovered this was now occurring on colour photos too (whereas it'd only been on B&W previously). The problem is, it really isn't noticeable unless you really enlarge or zoom in or look closely, so it isn't always very apparent. I'm hoping like my last issue this is just a scanner thing, not lab. Of course, I can't tell on the negatives because it would be very tiny if it was on there. Is it maybe dust? Here are three close up crops of this "distortion". All three with Ilford HP5+ 400, first one with Nikon F80, the other two with F90. Thanks.