[Alt-photo] uv content of led lights
mjkoskin at gmail.com
Sat Sep 23 19:43:07 UTC 2017
Normal warm white leds, incandescent bulbs are just getting so rare
nowadays. I may find one right now to try to make some cyanos. CFLs are
absolutely out of question. My darkroom light is a bunch of red leds, I
haven't noticed any fogging using them when developing paper negatives,
but the red colour makes it very difficult to see if coating of cyano is
On 23.09.2017 22:15, Marek Piosik via Alt-photo-process-list wrote:
> Hi, what color of LED light do you want to use? Because I used remote
> controlled LED bulb set to dimmer red and it probably fogged my carbon
> tissue. So take care and maybe use good old incandescent light...
> On 2017-09-23 20:39, Matti Koskinen via Alt-photo-process-list wrote:
>> Is there any risk of fogging, when using led lights and coating
>> papers for cyanos? Of course not under direct light, but in somewhat
>> shadowy spot.
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