Premium Member Tristan Noelle Posted March 25, 2023 Premium Member Share Posted March 25, 2023 I was operating camera the other day for a performance. We all were on different focal length Ultra Primes, straight from the same rental house. The 100mm I was on was noticeably more prone to flaring than the other focal lengths and had reduced contrast with brighter scenes. I took a photo of the lens with a light shining on it and noticed the pictured spots. It didn’t look like the spots were on the front element, but deeper in (I could be mistaken). And I didn’t get a chance try and clean it. Any thoughts on what it could have been? -Tristan Link to comment Share on other sites More sharing options...
Joerg Polzfusz Posted March 25, 2023 Share Posted March 25, 2023 Could this be lens fungus? Or some damaged coating? Link to comment Share on other sites More sharing options...
Premium Member Dom Jaeger Posted March 25, 2023 Premium Member Share Posted March 25, 2023 Does the rental house not have a service department you can ask? Often white speckling like this is due to degradation of element edge blacking, sometimes called “Schneideritis”, but it’s usually around the edge when looking in because it’s an optical reflection of the edge of the glass. This looks more like some form of contamination, but it’s hard to tell just from photos. I have encountered similar speckling on internal surfaces which cleaned off, not entirely sure of the cause. 1 Link to comment Share on other sites More sharing options...
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