Vintage lens color cast

[zerocool22]

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!

[heart0less]

Maybe this thread will help you:

https://www.photo.net/discuss/threads/yellowish-cast-looking-through-35mmf1-4.60894/

[buggz]

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.

[webrunner5]

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.

[Marcio Kabke Pinheiro]

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.