Author Topic: Lab lights, how much are you happy with lights in your lab  (Read 1882 times)

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Offline Psi

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Re: Lab lights, how much are you happy with lights in your lab
« Reply #25 on: May 16, 2019, 05:15:19 am »
i have 2x 50W  95%CRI YUJI leds in my smallish lab.

What format bulb are you using? Are you using just their high CRI emitters on your own heatsink etc.? The Yuji LED's phosphors appear much better.
I'm a bit tired of pissing around with 10W-50W LED's mounting them on a heatsink, adding lens etc. and trying to beat an Ikea desk lamp  :palm:
Yuji wants $499 USD for a desk lamp.

I've been trying GU10's with E17 adapters and such. But the GU10 is so narrow beam, it's like a flashlight.
Something that could mount on 2020 hardware would be great for making LED lighting.

yep, just two 50W cob emitter on a large heatsink and slow speed fan. I have a 30cm x 30cm diffuser sheet mounted over it to make it look a bit better and prevent it casting hard shadows.
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Offline Housedad

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Re: Lab lights, how much are you happy with lights in your lab
« Reply #26 on: May 16, 2019, 06:29:29 am »
My lab is in my basement.  There already were six fixtures with (4) cool white t-12 bulbs each, and I added six 4 ft daylight t-8 2 bulb shop lights over the benches. 

I really like the effect even though my wife says that if I add any more the house will start to fly from the photon pressures. 😎
At least I'm still older than my test equipment
 

Offline SteveyG

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Re: Lab lights, how much are you happy with lights in your lab
« Reply #27 on: May 16, 2019, 07:35:39 am »
DIY Perks (YouTube channel) has a project making LED "studio" lights (but generally useful, too). They have a high CRI and adjustable color temperature, and can be made fairly inexpensively.

youtube.com/watch?v=DhbMnQt14_o]https://www.youtube.com/watch?v=DhbMnQt14_o[/url]

*rephrased
I think the video is misleading
@ 5:15, the video shows what appears to be a very very very high end looking LED spectrum, sun like wavelength density.
and then at that moment he seems to suggest that is the LED sold on the ebay listing
a spectrum of such density is likely CRI98, but I think it is impossible for such a LED to be 120-140lm/W claimed by the ebay seller
if he claimed 95+ CRI without showing the spectrum, the china LED specs of 120-140lm/W might be plausible
but CRI 95+ in order to solve what he calls a "green" face, may or may not be the final outcome.
to shift into rich red spectrum, the led must have red peak at 630-650nm. not all CRI95+ have this peak. and the ebay seller does not display the spectrum.

(this is the spectrum capture of my cfl light, a common cfl. nothing special)
disclaimer : I am only a noob at lighting, but I cannot un-see this spectrum he showed

CRI is somewhat meaningless for video. You'd actually be better off with RGB LED lighting where the spectral peaks of each LED match the peak sensitivity of the RGB elements of the sensor.

For my own lab and for recording videos, I have around 200W of LED lighting - they're all Enlite 10W LED fittings, however I do not find these as effective as the 54W T5 tubes I used to use.

Online EEVblog

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Re: Lab lights, how much are you happy with lights in your lab
« Reply #28 on: May 16, 2019, 01:45:19 pm »
I've started using my CRI >95 Aputue HR672 studio lights for both talking head shots and bench videos. The colour balance is so much nicer now.
Also just got an AL-F7 for on-camera use, but haven't used that in a video yet, it's for field stuff. Very nice portable CRI>95 compact light.



 

Offline Ice-Tea

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Re: Lab lights, how much are you happy with lights in your lab
« Reply #29 on: May 16, 2019, 01:50:36 pm »
I have a pretty much continuous row of panels mounted under the shelves over my bench + general generous LED lighting  in the rest of the room. Get decent brand LEDs so the CRI isn't complete shite.


Offline Psi

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Re: Lab lights, how much are you happy with lights in your lab
« Reply #30 on: May 18, 2019, 02:41:41 am »
I have one of those LED panels mounted to the bottom of the motorized projector drop down box. 
So it looks like a panel light when the projector is up.
Greek letter 'Psi' (not Pounds per Square Inch)
 

Offline tkamiya

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Re: Lab lights, how much are you happy with lights in your lab
« Reply #31 on: May 18, 2019, 05:17:42 pm »
I have all LED lights in my house, lab included.  An only exception is one desk lamp that is color balanced.  I use that to evaluate photographic printing. 

I have no issues or problems with LED lights.  One of the things I did was to be careful with color temperature.  "Living space" is all 3000K.  Task rooms are 4000K with 5000K supplemental lights.  Garages and outside lights are all 5000K.  Color temperature makes huge difference.

In task room, lab included, I have two general light fixture in middle of the ceiling.  They are 4000K.  They light the room sufficiently.  But desks are against the wall, so my task area (where I have my stuff and hand) are in shade.  So I have 5000K rod type LED light (flour-scent lamp replacement) at 5000K.  This is hanging 3 feet above my desktop.

In my computer / office / general purpose room, I have SEVEN light fixtures.  They are all 4000K.  I have an option to turn center one only or turn all of them on. 

This arrangement made my life much easier.  There are no dimming but I can turn on and off extra lights.  By the way, in my garage, I have TWELVE light fixtures.  LED lights are great.  Low power consumption, low heat, and pretty darn bright.  Sometimes light dispersion pattern can be an issue but when I have this many, it doesn't matter.  Yes, I am an electrician and this is my house.  :)

« Last Edit: May 18, 2019, 05:19:38 pm by tkamiya »
 
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Offline barjammar

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Re: Lab lights, how much are you happy with lights in your lab
« Reply #32 on: September 09, 2019, 07:52:43 am »
Hi Dave and Co,
I am setting up a workbench and need advice on What is the best lighting to use? 
I'm going to install more Altronics LED strips, but COOL or WARM?  What is best for Youtube videos?  My videos (if I ever do one) will be amateur quality but I may as well use the LED's I have already.
See them here:
https://www.altronics.com.au/p/x3208a-10mm-warm-white-12-volt-led-strip-light-5m/
https://www.altronics.com.au/p/x3203a-cool-white-12-volt-led-strip-light-5m/
See attached images of products.
Barry
 


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