zerocool22 Posted January 5, 2019 Share Posted January 5, 2019 Heey guys, I saw a video once where a guy fixed his lens which had a color cast. By putting a red light on it, a day later the problem was gone. Offcourse now I cant find the video. But what kind of light bulb do I need? Is it IR? Thanks! Quote Link to comment Share on other sites More sharing options...
heart0less Posted January 5, 2019 Share Posted January 5, 2019 Maybe this thread will help you: https://www.photo.net/discuss/threads/yellowish-cast-looking-through-35mmf1-4.60894/ Quote Link to comment Share on other sites More sharing options...
buggz Posted January 5, 2019 Share Posted January 5, 2019 I remember just leaving all my "radiated" element lenses in the sun, that temporarily "cures" it. I think UV lamps also work for the yellowish color. Quote Link to comment Share on other sites More sharing options...
webrunner5 Posted January 5, 2019 Share Posted January 5, 2019 6 hours ago, heart0less said: Maybe this thread will help you: https://www.photo.net/discuss/threads/yellowish-cast-looking-through-35mmf1-4.60894/ I think all the people in that thread have had brain injuries Long before they got into photography LoL. ? Maybe we can chip in and send all of them a autographed Tin Hat. heart0less 1 Quote Link to comment Share on other sites More sharing options...
Marcio Kabke Pinheiro Posted January 6, 2019 Share Posted January 6, 2019 There was a Ikea LED lamp (JANSJÖ lamp) that reportedly clears most of the yellow tint of some thorium lenses. Since we don't have Ikea in Brazil, got a chinese Led bulb with the same leds, and tried with my Canon FD 35mm f/2 SSC. Did not take away all the yellow cast, but I can say that removed like 90% of it. It is better than put it on the sun - even wrapping the lens in foil, the heat could bring some problems. Quote Link to comment Share on other sites More sharing options...
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