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How to improve your WFH lighting to reduce eye strain

rustle.ca

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Re: How to improve your WFH lighting to reduce eye strain

#261
post #161
post #71

Earlier quoted context omitted.

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.

Yuji looks quite good, thanks. I need to see if I can integrate this with my DMX/Zigbee lighting control.

Re: How to improve your WFH lighting to reduce eye strain

#262
post #252

Earlier quoted context omitted.

Along light temperature there's light cri as well, which measures how faithful to real life a light is. New standards such as Tm30 came out recently as well

CRI is usually only reported on professional grade lamps (Theatre, Film/TV) you'll almost never find it reported on anything below that.

Some consumer bulbs at least used to have it listed on their packaging.

Re: How to improve your WFH lighting to reduce eye strain

#263

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 agree up until golden hour. It's a very specific style of lighting and isn't any better or worse. It's not the best time to take a picture, it doesn't have the best light. It's a specific kind of light.

Eh, I can tell you I definitely had more sales of portrait prints at golden hour for my high school senior sessions.

You can, of course, make great photos in any light. Golden hour and blue hour are easy because the light is inherently nice.

Re: How to improve your WFH lighting to reduce eye strain

#264

Earlier quoted context omitted.

Not OP but I think it can be either. Great for the safety of one driver who can see the road perfectly can be awful for the safety of another who is blinded. LED bulbs exacerbate an already existing problem caused by vehicle noses being too tall such that the headlight is exactly eye-height for other drivers. Sometimes they're poorly calibrated too, aiming too high. Many drivers also retrofit super bright LED lights…

The cold LED headlights also strain your eyes more as the driver. It's much less comfortable to look at IMO.

Unfortunately I can't compare between 2 modern cars equipped with similar lights save for the color temperature. I haven't seen modern LED headlights with warm color, so when I think of warm color headlights my brain immediately goes to my experience with cars as old as the mid '70s, with filament bulbs. This evokes memories of almost blindly searching for the road right in front of me, compared to today's "I can see 200m ahead".

So by this measure, not having to squint to see anything ahead, my (aging) eyes feel much more rested and reassured today than decades ago.

Are there new cars with warm LED lights?

Re: How to improve your WFH lighting to reduce eye strain

#265

This is another +1 for WFH. Many office environments have terrible lighting, and there's very little you can do about it.

I remember standing up on office chairs to twist the florescent tube bulbs above my desk just enough to turn them off. That light was just awful. It helped a lot until maintenance would come in at night and "fix" the light and I'd have to do it all over.

I did the same thing and it was good for a long time, then one day I came in to find the maintenance people replacing it - thinking it was broken - instead of just twisting it back. I guess they weren't too bright (lol).

Re: How to improve your WFH lighting to reduce eye strain

#266

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…

In the history of LED lighting, it took quite a bit of work (hybrid phosphor technology, etc) to get them to emit warm color temperatures. The exact color temp can be a personal preference, but I think a lot of people aren't privy to the difference the color temperature of "white" light can make! I want to go on a guerrilla campaign around my neighborhood and replace porch light bulbs with warm equivalents.

> I think a lot of people aren't privy to the difference the color temperature of "white" light can make

Go out and buy cheap Christmas lights and expensive ones, and put them up next to each there, and show them that. The difference is staggering. To the point where they look dumb if you hang them up together.

Re: How to improve your WFH lighting to reduce eye strain

#267

Earlier quoted context omitted.

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…

What I'm trying to achieve is lighting a bit like in these "Artificial Skylight" concepts: https://architizer.com/blog/practice/materials/let-there-be-... They claim their technology is about "Rayleigh scattering" but I think that's mostly marketing mumbo jumbo. Sure that might add a bit of diffuse blue but their main secret, I would bet, is parallel rays which explains why their fixtures require so much space above…

Reminds me of this old dyi video about using decommissioned led monitors to create light boxes with parallel rays to emulate sunlight: https://www.youtube.com/watch?v=8JrqH2oOTK4

Re: How to improve your WFH lighting to reduce eye strain

#268
> and it can provide us with much needed vitamin D

Sunlight through your windows won't have any effect on your Vitamin D. The Vitamin D is made by your body in response to UVB radiation, which you get when exposed to the sun.

But most windows made in the last 50 years block UVB.

Re: How to improve your WFH lighting to reduce eye strain

#269

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

How would this compare to something like the Godox LA 200D, which claims an output of 100,000 lumens? I use two of these lights on tall stands pointed at my ceiling, which seems to work very well

They claim 101,000 lux, not lumens. Lux is light per square meter (roughly), lumens is total light output. The closer you get to the source, the higher the lux will be, so it's hard to compare lux equally. Based on their 230W power draw and typical COB efficiency, I'd guess it's 20,000-35,000 lumens.

Tldr, we're brighter, fanless, have adjustable color temperature, smart home compatible, and more aesthetic.

Re: How to improve your WFH lighting to reduce eye strain

#270
post #230

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

It's so expensive.. And it uses a whopping 500W. Why not then just use a regular halogen standing floor lamp?

You get 6x less lumens/watt with a halogen lamp
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