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The ringed splotches are unlikely to be dust. I suspect water spots. Tim Campbell suggests oil. If you really want to know what they are, you should examine the sensor with a loupe. Regardless, you will likely need to clean the sensor with wet swabs. I disagree with having someone at a camera shop clean the sensor for you because it's such a simple process. ...


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One thing everyone agrees on, which is important to understand so I'll say it again later: If you aren't 100% comfortable cleaning your sensor, take it to a camera shop! The sensor is the most expensive, and the most delicate component of a camera. Therefore, trying to clean it with a cheap kit yourself may cause irreparable damage to your sensor. These ...


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These spots seem like typical dust spots. I encounter them regularly and are usually quite easy to remove in Lightroom or Photoshop. In the darkroom, it is more of a hassle. After meticulous dust removal pre-exposure, dust may still show (significant) spots on the print. Here, retouch kits are used. You won't ever get rid of dust. You worded it nicely, it's ...


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I checked the negatives, and as suggested by the comments, there is some sort of glue on them which matches the red blobs in the pics. I have checked my camera and everything seems to be perfectly clean. I have been using different rolls of different brands and ISOs, bought on different shops, but always developed in the same lab. It never occurred to me ...


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