How to Design Lighting: Layers, Lumens, Footcandles, Colors, and Systems with Kichler's Jeff Dross
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- čas přidán 16. 04. 2020
- Jeff Dross is the Director of Education and Industry Trends for Kichler Lighting, and he's been lighting homes for 45 of that company's 82 years. A lot's changed in lighting, but here are some universal basics, along with the latest innovations to consider when planning the lighting system for any house, addition, or room.
See our favorites among the thousands of lighting options we're swimming through at: www.kichler.com/favorites/sha...
More on this build at: HomeDiagnosis.tv/atlanta-home... - Věda a technologie
"If the kitchen is too expensive you don't leave out the refrigerator." This will be my new response when builders ask me to cut back on the insulation specs.
Oh man. You've hit my subject. As a film industry gaffer, all I do is lighting science and lighting design. This was all good information for basics but I have a couple of things to add.
1) Concerning color... Kelvin isn't the only thing to think about. The advantage of incandescents is that they are black body radiators, like the sun, which brands they give off full spectrum light. This means, although your Kelvin may be 2700, every color of the rainbow is represented in that white. This means that when that light reflects off a colored surface, it will accurately represent that color back to your eyes. The problem with CRI readings on LEDs is they can be fine tuned to the CRI chart while still having spectrum drops so you'll get bad color rendering on certain colors. That's not to discount LEDs. They're definitely the future. Just something to check.
2) The bigger the source, the softer the light. The smaller, the harder. The closer the source, the softer the light. The further, the softer. Bouncing light off the ceiling makes your entire ceiling the source, therefore softer. It's actually something we do quite often in film for a quick, beautiful soft source.
3) If you want beautiful light, think windows. Not direct sun but the sky. Biggest, most beautiful source of light. And then accent with lamps. At night, just the lamps. Essentially you're painting with light. Pools of darkness are okay. In fact, preferable. Recessed or faux recessed should never be used unless you've dropped something and can't find it, lol.
Anyways, I could talk for hours about this stuff but if you're interested in color science Frieder Hochheim from KinoFlo has some good talks. And here's a good primer: www.google.com/search?q=color+science+led+indie&oq=color+science+led+indie&aqs=chrome..69i57.6274j0j9&client=ms-android-hms-tmobile-us&sourceid=chrome-mobile&ie=UTF-8#
You rock, Brandon, great comments. Very familiar with how scientific and painstaking film lighting is- something that requires way more patience than I have I think.
@@HomePerformance If you're ever in the Seattle area hit me up and I'll let you check out my spectrometer. 🖖
I know this reply is a year later but great into. In currently trying and failing to design the lighting in my house. I know I want zero recessed lights and much bounced light.
Question. What are the best lights for bouncing off the ceiling.
2. Is it's better to bounce off the ceiling or off a wall? Thanks
@@jl9678 The easiest thing to do would be to hide some led strip lights pointing up inside hanging fixtures or crown moulding around the room.
@@lightswitchvideo thanks for that info. I'll definitely look into that.
Great video. I used mostly sconces with smart lights to adjust color temp for each occasion. It's great because during the day you want 6000k, late at night, 2000k or less to get rid of that nasty Blue that hinders sleep. Cool to see more people finally thinking about lighting. It's fun and one of the most important things in making a room feel right and be functional. Smart lights have really expanded the options
Thanks for chiming in, Nathaniel
This was super valuable if only that it pointed me to recommendations for foot-camdles for each room, as I design the lighting for my kitchen/dining renovation in progress right now. I had a general idea of what I wanted, but getting numbers that I can use to choose for particular fixtures is great. Thanks!
Excellent Bryan
Jeff should be writing a book or teaching a Master Class on this (if he hasn't already). Lighting seems to be a dying art in the industry and everyone could learn from his experience. Thanks for sharing this.
Thanks for following, K
Absolutely brilliant video Corbett - who knew there is so much to consider. Makes me want to run out and find somebody like Jeff to come walk thru my house and give us a plan. I have a den that is much like yours with a ceiling that goes from ~ 10 ft to ~ 20 ft. I can't wait to see what you do with the lighting - well, actually, I can wait to see the whole finished product. Again, great video.
Thanks for being an enthusiastic follower! We'll keep it coming.
This was very informative. Ty
Hi Kitty!! ☺
couple of comments. Task lighting is super important to areas where you really need quality of lighting.. accent lighting sure can be wonderful. I like to think how when I go to an art gallery they tend to use wall washing type lights to highlight art work. Talk to your designer about this lighting and where it wont bleach out your paintings and such.
great stuff! This will be "required watching" for my clients because, as a designer, I feel OVERWHELMED with lighting design with all the fabulous choices that exist (post-CFL world). May I ask: what was the fee for your lighting designer - or was it a part of the package that Kichler offers, or a combination?
considering the technology improvements, as with cars first incandescent then led and laser at the most recently, do you have any knowledge of a laser lights coming to homes?
Can ceilings be painted in creative ways to help diffuse light in a cheerful way? Would wall paint that is glossy or sparkly distribute light better than matte paint? How do string lights compare to permanent fixtures? What about focusing light on a framed piece of reflective paper art?
Good interview. I have done lots of lighting installs in commercial applications and you learn what works and what doesn't in many areas.
One issue I have though is his choice of color temperature. The 2700-3K color in a house is horrible. It makes you feel like you are in a dingy smoky poorly lit bar. That yellow light is annoying to deal with and many residential customers are replacing their low K lighting with lighting of around 4K because it's more like sunlight instead of a poorly lit cave.
The problem with current LEDs is the powersupplies tend to fail. It doesn't matter what you paid for them as in my experience I have seen the same failure rate on high end units as I have cheap ones because the powersupplies are often the same units. Some super cheap bulb type ones use a capacitive dropper and capacitors are not known for long life.
The issue is say I have 10 sconces in a room and one fails. If it's more than a few months old you won't be able to buy another to replace it as it will have been discontinued. So you have to replace every unit. If that;s the case then why would you buy anything but the cheapest units available? What needs to happen is people need to realize that on many fixtures you can buy replacement power supplies off the shelf for dirt cheap and swap them out. That is the next phase of replacing bulbs.
In the bedrooms I have put in the small hockey puck lights near the corners because a fixture in the middle of the room is about worthless as it is always behind you and everything you do is in a shadow. In the living room I have them behind the couch and chairs and one either side of the TV which those rarely get used but they are there. As for lamps... I have a deep seated hatred for lamps as they are only decorative and don't provide useful lighting.
Deep thoughts, Robert, thank you for sharing
I tend to like the daylight lighting for both reading and task lighting.. it is much better in the kitchen as it would look much more appealing but that is me. Cooler is ok but can make some food less appetizing. Laughing.. dont eat yellow snow or blue food
The issue with the "lights become like an appliance" analogy is that when a light dies or you want to change the color temp/features/etc. you will have to spend many times what the fixture cost to get someone to come out and "service" (replace) your light. That sounds lake an awful tradeoff for something that is so simplistic to do that it is the basis of a whole series of lightbulb jokes. Perhaps as they mature this will become more palatable, but I've had many LEDs die already and the quality of built-in LEDs is highly suspect for both longevity and light quality. I'm personally going with all LED bulbs I can change out for my build.
Interesting to hear about light design, but not a fan of the industry pushing for cheaply made integrated LED fixtures that invariably fail and end up in a landfill. I have light fixtures now that are over 60 years old that have enjoyed the huge leaps in lighting efficiency by simply swapping light bulbs. And if that cheaply made LED bulb burns out in 6 months because of poor workmanship or quality I can replace the bulb instead of throwing the entire lamp away. Just my two cents.
Agreed Eric- and lightbulb jokes will be a sad collateral loss as well
Damn. I’m a 20 yr old guy. Why can’t Corbett be single and gay? I just want to record his voice to fall asleep too. I love it.
dont go LED. The LED flicker has found to be bad for your eyes. go figure.
LEDs don't flicker unless they have a bad rectifier. They run on DC power which is a solid electrical signal. Don't buy cheap LEDs.
Incandescents, however, all flicker.
@@lightswitchvideo have seen a boat load of fluorescent that also flicker. Yup cheap LED flicker also.
@@stevepailet8258 Flourescents are powered from AC so will always have imperceptible (to the eye) flicker. There are multiple other failure points that may cause fluorescent flicker.
My point is that properly rectified LEDs are flicker free even to tens of thousands of frames per second because DC is solid signal. If it's flickering, AC power is leaking through.