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Film lights are fantastic for emulating daylight. I got two of these, $350, but they’re fantastic and I use them in place of my crappy ceiling lights: https:/

Film lights are fantastic for emulating daylight. I got two of these, $350, but they’re fantastic and I use them in place of my crappy ceiling lights: https://www.bhphotovideo.com/c/product/1753990-REG/amaran_apm022xa10_amaran_cob_200x_s.html https://www.bhphotovideo.com/c/product/1753990-REG/amaran_ap...

KennyBlanken 3y ago
Or you can just buy 490nm LED bulbs, which is the wavelength the photoreceptors in the eye related to circadian rhythms are most sensitive to. Just be aware that they should be off to the sides and ideally indirect, because concentrated blue light is actually hazardous to the eye. One can also buy a couple of bright, high-CRI LED bulbs for one's existing lights and save themselves about $650, because the difference between those and the studio lights is typically red spectrum coverage, which is not relevant for circadian rhythm / SAD treatment. The film/TV LED lights are also designed to have a really smooth spectrum, minimizing gaps. If you want to do that...fine, but please don't advise people to waste lots of money on something completely unnecessary. I assure you, a double-height high-CRI LED strip running along the edges of the room will throw a fuckton of light without the issues caused by having two very intense point sources, namely shadows and glare. There's almost never a problem with too much blue light in the high CRI bulbs (in fact, the people doing the spectrograms are usually looking for bulbs without the high blue spectrum spikes, and many people are looking for bulbs without the blue spikes (and they're hard to find!)
- conradev 3y ago
  Yeah – to be clear, I am not doing it for any particular element of physical health or circadian rhythm, I am just trying to emulate sunlight for aesthetic reasons (yum, red spectrum coverage) Smart bulbs sacrifice on light quality for color and dumb bulbs can't adjust color temperature (even dumbly!). Studio lighting is expensive but has both. I love the idea of a high-CRI LED strip, because, yeah, an intense point source is really not ideal to light a room. But the strip would need to be bi-color, but such a thing probably exists. I just moved and I have zero ceiling sockets, so A19 is dead to me :(

KennyBlanken 3y ago

Or you can just buy 490nm LED bulbs, which is the wavelength the photoreceptors in the eye related to circadian rhythms are most sensitive to. Just be aware that they should be off to the sides and ideally indirect, because concentrated blue light is actually hazardous to the eye. One can also buy a couple of bright, high-CRI LED bulbs for one's existing lights and save themselves about $650, because the difference between those and the studio lights is typically red spectrum coverage, which is not relevant for circadian rhythm / SAD treatment. The film/TV LED lights are also designed to have a really smooth spectrum, minimizing gaps. If you want to do that...fine, but please don't advise people to waste lots of money on something completely unnecessary. I assure you, a double-height high-CRI LED strip running along the edges of the room will throw a fuckton of light without the issues caused by having two very intense point sources, namely shadows and glare. There's almost never a problem with too much blue light in the high CRI bulbs (in fact, the people doing the spectrograms are usually looking for bulbs without the high blue spectrum spikes, and many people are looking for bulbs without the blue spikes (and they're hard to find!)

conradev 3y ago
Yeah – to be clear, I am not doing it for any particular element of physical health or circadian rhythm, I am just trying to emulate sunlight for aesthetic reasons (yum, red spectrum coverage) Smart bulbs sacrifice on light quality for color and dumb bulbs can't adjust color temperature (even dumbly!). Studio lighting is expensive but has both. I love the idea of a high-CRI LED strip, because, yeah, an intense point source is really not ideal to light a room. But the strip would need to be bi-color, but such a thing probably exists. I just moved and I have zero ceiling sockets, so A19 is dead to me :(