221–230 of 309 posts
Very important number about LED lights is CRI. If this number missing, I would not buy it. Typically >80 is ok, ideally >90. https://en.m.wikipedia.org/wiki/Color_rendering_index
> When it comes to light brightness, too much is just as problematic as too little Recently moved into a house with on/off light switches. Having the ceiling lights on full brightness was downright oppressive. I installed dimmer switches, and it's so much nicer it's hard to really convey.
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Where do you buy the surplus cinema lighting equipment? And how do you mount it inside your house? I went down a high CRI office lighting rabbit hole last year and I could only find expensive, new photography lights.
Just get modules or strip from Yuju; I have zero bad experience over many years with them. Sure, it's not cheap, but IMO ~1$/W plus simple PSU (either some standard voltage, or dimmable current, depending on what you got) for good and 1.5~2$/W for very good CRI is quite fine.
They’re quite expensive compared to normal LED bulbs, but it’s hard to argue against the quality of life improvement, particularly in the winter where I work remotely from a home office all day.
I was actually considering setting up an high brightness array of their full spectrum lighting above my desk. I know the article mentions diffuse lighting is best, but for some odd reason I prefer “spotlight” style. I don’t know why—it just feels cozier to me.
One thing I’ve noticed as I’ve learned more about lighting is that the brighter the light, the better cool color temperatures start to look. For a long time I hated anything above 3000K (too “office-like”) but 4000K actually starts looking pretty good around ~7,000 lumens directly overhead, and I imagine 5000K would look alright above 15,000 lumens or so (perceived brightness is a logarithmic function of luminance). IMO 5000K looks downright ghastly in a home setting for the typical range of 500-800 lumens that most bulbs sell at nowadays.
This is another +1 for WFH. Many office environments have terrible lighting, and there's very little you can do about it.
> An even, diffused lighting environment is best for the eyes indeed. i am unsure where the love for those "spotlights" embedded into the ceiling comes from. every time i enter a room that has them i want to crouch like gollum. the only thing they seem to do is blind you. indirect lights can be expensive and hard to find though. i built 12 hanging lamps that illuminate the ceiling instead of the floor myself, which s…
Mind sharing how you made the hanging lamps? I'm currently designing a new house and was thinking of doing a similar setup. Any guidance would be appreciated.
2.) mount a lamp suspension on the ceiling, something like this ( https://www.amazon.de/dp/B094HX42PN/ ).
3.) if you want 3 lightbulbs, just screw in a a 3-way splitter ( e.g. https://www.amazon.de/dp/B07VH7KKCH/ ). the benefit here is more and more upwards-facing light
4.) the final part is connecting the bowl to the lamp suspension. i just made 4 screws in the suspension and 4 holes in the bowls and connected with basically-invisible nylon strings. getting the nylon strings to be all the same size was tricky but doable.
A lot of the guidelines that are used to light a scene for a camera are also quite useful for lighting a room for yourself, just with less light needed as the human eye has a much higher dynamic range than a camera sensor: * Use diffuse light. This usually means multiple light sources bouncing and diffusing light off surfaces (ceilings, walls, etc) or diffusers. * Minimize shadows. Shadows lead to contrast which can…
I'm in a basement and had fairly good success with certain "led shop lights" to make the space feel more like it has natural light (though I could improve things further). I do find however, that using diffuse lighting and minimizing shadows is what makes lighting feel artificial. Natural sunlight has very parallel rays that create very evenly lit surfaces with very sharp shadows. Whereas most artificial light has ra…
Meanwhile home lighting is well below the 500 lux range, if not even in the 100-200.
I even suspect that the current near-sightedness epidemic is caused by people spending too much time in dim lighting. Maybe if our indoor lighting was brighter our eyesight would not adapt to become near-sighted as much.
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Well done! How did you figure out 3000K replacement part numbers for each SMD?
I'm about to order a bunch of PCBs to substitute overhead lights on my car and some of my friends for something around 3000K and high CRI. Not only the color temperature is so cold, but usually the spectrum is terrible, and the quality of the light is awful. I just have to finish choosing the led driver :P
Lucky friends! Maybe repair shops could offer customized interior lighting as an aftermarket service.
I'm working on something like the lamp depicted in the images[0]. It's bright, diffuse, dimmable, flicker free, and high CRI. [0] https://getbrighter.com