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I'm feeling an itch
Brightcolours Offline
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#23
04-30-2022, 07:56 AM (This post was last modified: 04-30-2022, 08:18 AM by Brightcolours.)
It is widely known that lenses with thorium glass do yellow when not used, and that exposing them to sunlight (UV) gets rid of the yellowing again. The yellowing can be countered by custom white balance anyway, and should not impact digital photography much.
What I have no read about is what actually yellows, and from which kind of radiation, and how UV light radiation counters/reverses that.
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Messages In This Thread
I'm feeling an itch - by Klaus - 04-24-2022, 10:40 AM
RE: I'm feeling an itch - by thxbb12 - 04-24-2022, 01:31 PM
RE: I'm feeling an itch - by Brightcolours - 04-24-2022, 03:23 PM
RE: I'm feeling an itch - by thxbb12 - 04-24-2022, 06:18 PM
RE: I'm feeling an itch - by Klaus - 04-25-2022, 12:04 AM
RE: I'm feeling an itch - by Klaus - 04-25-2022, 01:33 AM
RE: I'm feeling an itch - by Brightcolours - 04-25-2022, 06:32 AM
RE: I'm feeling an itch - by davidmanze - 04-25-2022, 06:56 AM
RE: I'm feeling an itch - by Klaus - 04-25-2022, 10:46 AM
RE: I'm feeling an itch - by Brightcolours - 04-25-2022, 02:39 PM
RE: I'm feeling an itch - by Klaus - 04-25-2022, 01:18 PM
RE: I'm feeling an itch - by toni-a - 04-30-2022, 07:30 AM
RE: I'm feeling an itch - by Brightcolours - 04-30-2022, 07:56 AM
RE: I'm feeling an itch - by Rover - 04-25-2022, 05:20 PM
RE: I'm feeling an itch - by toni-a - 04-25-2022, 09:28 PM
RE: I'm feeling an itch - by Klaus - 04-25-2022, 10:21 PM
RE: I'm feeling an itch - by davidmanze - 04-26-2022, 10:01 AM
RE: I'm feeling an itch - by Klaus - 04-26-2022, 11:00 AM
RE: I'm feeling an itch - by davidmanze - 04-26-2022, 03:49 PM
RE: I'm feeling an itch - by Brightcolours - 04-26-2022, 11:08 AM
RE: I'm feeling an itch - by Klaus - 04-26-2022, 12:11 PM
RE: I'm feeling an itch - by Klaus - 04-26-2022, 01:26 PM
RE: I'm feeling an itch - by Klaus - 04-28-2022, 11:43 PM
RE: I'm feeling an itch - by Klaus - 04-30-2022, 09:53 AM
RE: I'm feeling an itch - by Brightcolours - 04-30-2022, 01:00 PM
RE: I'm feeling an itch - by Klaus - 05-04-2022, 12:14 AM
RE: I'm feeling an itch - by giulio - 05-11-2022, 11:36 AM
RE: I'm feeling an itch - by Klaus - 05-11-2022, 12:47 PM
RE: I'm feeling an itch - by Klaus - 05-14-2022, 08:22 AM
RE: I'm feeling an itch - by toni-a - 05-15-2022, 06:27 AM
RE: I'm feeling an itch - by davidmanze - 05-15-2022, 07:51 AM
RE: I'm feeling an itch - by Brightcolours - 05-15-2022, 09:46 AM

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