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The head light has a white LED and a red LED . A red only LED has its spectrum well in the safe area as it has a narrow spectrum unlike filtered tungsten. Some LEDs are multicolour which sounds like your trouble.
I have six, red LED strip lights that make my darkroom look like daytime on Mars. Never had any orthographic material compromised. Years of squinting with 15 watt orange/red bulb are over.
500 and 250 watt long neck enlarger bulbs for Elwood 8X10/5X7 enlargers are getting rare, but I have enough. I have tried LED bulbs in almost any darkroom/studio application I can think of. LED is getting better every 6 months. But if using traditional enlarging filters YMMV.
PF712B 230v 15w B22d Bayonet Socket. Darkroom Red Safe Light. Philips PF712B. Red Safe 77841425. EAN 0700461368199. Designed for optimum performance in today’s precision range of darkroom applications.
9 sty 2010 · I've been using the same little red scoreboard light bulb as my "safelight" for over 5 years. I they cost less than $3 and don't fog any paper I've used. It's screwed into a socket dimmer and never gets adjusted.
Decided to try out the headlamp after getting a red led bulb off amazon that didn't work out. Some said they use this one for their darkroom but it didn't workout for me. The test strip was from 2m away for 2 mins. As for the headlamp, very very minimal fogging.
Jumbo Safelight Bulb, 25W with light red (1A) filter for darkroom use. Fits any standard light socket for easy installation. Provides 360 bright, eye-catching illumination. Ideal for photography, video production, and X-ray rooms.
