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-   -   New LED Lights (https://www.dvinfo.net/forum/photon-management/48532-new-led-lights.html)

Patrick King July 29th, 2005 01:47 PM

New LED Lights
 
Ran across this link for LED Lights.

Prices are much less than LitePanels, but they don't seem as well integrated and 'ready-to-go' for field acquisition. But you could put together a talking head setup for much cheaper. Quality unknown compared to the frequently reviewed and critiqued LitePanels.

Stephanie Wilson July 29th, 2005 05:08 PM

Quote:

Originally Posted by Patrick King
Ran across this link for LED Lights.

Prices are much less than LitePanels, but they don't seem as well integrated and 'ready-to-go' for field acquisition. But you could put together a talking head setup for much cheaper. Quality unknown compared to the frequently reviewed and critiqued LitePanels.

Hey Patrick,

Was replying to tell you that you forgot to add the link to your post. But when I "quoted" you I see the link.

Weirdness.

Chris, are you out there?

Steph

Stephanie Wilson July 29th, 2005 05:17 PM

Hi Patrick again,

The links disappeared after my reply posted.

Steph

Patrick King July 29th, 2005 05:59 PM

Stephanie,

Sorry for the slow reply, power was out for a few hours.

Go to http://vidled.com/products.html for the new LED Lights,

and http://www.litepanels.com for the LitePanels

And bring your wallet, because if you measure by the pound, this is some expensive gear.

Young Lee July 30th, 2005 12:02 AM

Thanks for the link.

Giroud Francois August 18th, 2005 11:23 AM

how to build your LED panel for cheap

heatsink to glue the LEDs on:
http://www.radianheatsinks.com/standard/hs1591eb.html

Leds (8 x luxeon star white 1 Watt should be enough)
http://www.ledsupply.com/led-catalo...te-luxeons.html
8 Leds are ok to grab a decent picture in a total dark room, but it is not perfect.
If you can , choose 4 white cold LED and 4 whit warm LED.

1 driver for LED (take the DC 700mA dimmable version 3021-D-E-700)
http://www.ledsupply.com/led-drivers-buckpuck.html

If you got some old LCD screen to scap, there are valuable plastic sheet and plexi glass to get from.

Epoxy glue dual-components PATTEX ALU to fix LEDs on Heatsink.
you can use the one for PC (Arctic silver, the glue not the grease ) but it is very expensive
look like this: a dual syringe with mixable resin , containing micronized aluminium
http://www.tedpella.com/14443.jpg
I think PATTEX is german stuff not distributed in USA.
Try LOCTITE Epoxy Adhesive 3805 Steel and Aluminium Epoxy Filler
Before gluing LEDs make sure the polarity of each is disposed in a way that
cabling will by short and easy.

some battery elements Li-ion 3.6V - 2 A (4 are ok)
http://www.batteryspace.com/index.a...TS&Category=739
you can find better , a kit with charger a 8 cell block (16V)
http://www.batteryspace.com/index.a...ROD&ProdID=1287
3.6 li-ion element are nice since the voltage for a led is around 3.4-3.5 Volt.
put 4 leds in serie and 2 series in parallel.

The result is a very light lamp, giving very diffuse light, you can switch on and off without risking a filament break.
People can look at it without being dazzled.
Stay cool enough to stay in the hand (but get hot anyway)
You can choose to mount the leds on a ring around the lens of your camera for MACRO.


Good luck

Giroud Francois September 2nd, 2005 04:03 PM

for info, i give refererence to ledsupply for the luxeon star, but unfortunately, they do not seem to have the LXHL-MWEC-Q model.
MWEC reference is important because it is the cold white 5500 K.
the -Q reference is important because the leds are bin-sorted, and Q is the best quality (highest power).

I found them here :http://shop.dotlight.de/shop/product...roducts_id/224

basically the cost per lamp (8 leds, one driver, one heatsink, one battery pack+charger +all the misc parts) should cost less than 200$.
that is nice for a lamp that can burn several hours.
Ideal for weddings.
will try to put pictures of next construction step on the web.

Marius Luessi September 10th, 2005 08:03 AM

Hey all,
just wanted to quickly chime in and offer some more info on our LED on-camera
LED video lights. (Thanks Patrick for the mention and the kind email correspondence.)

$225 isn't cheap, that's for sure. We originally set out to do this as a low
cost project and solution for our own use. We soon found out that if this is done seriously, the cost soon adds up.

Here's a recent test we did using two of our lights, and a Pana DVX100:
http://vidled.com/test-september2005.html

By the way, we are currently testing a VIDLED light that uses the same housing,
but is 40 degree, daylight balanced and INCLUDES a rechargeable Li-Ion battery
pack!!! Due probably by early next year.

Cheers,
Marius
vidled.com

Greg Boston September 10th, 2005 08:10 AM

Quote:

Originally Posted by Marius Luessi
Hey all,
just wanted to quickly chime in and offer some more info on our LED on-camera
LED video lights. (Thanks Patrick for the mention and the kind email correspondence.)

$225 isn't cheap, that's for sure. We originally set out to do this as a low
cost project and solution for our own use. We soon found out that if this is done seriously, the cost soon adds up.

Here's a recent test we did using two of our lights, and a Pana DVX100:
http://vidled.com/test-september2005.html

By the way, we are currently testing a VIDLED light that uses the same housing,
but is 40 degree, daylight balanced and INCLUDES a rechargeable Li-Ion battery
pack!!! Due probably by early next year.

Cheers,
Marius
vidled.com


I liked the one with cool led and 50%. Although, the prior frame with just the cool led looked pretty good. The final frame at 100% did seem to overexpose the face just a bit.

=gb=

Marius Luessi September 10th, 2005 08:22 AM

Quote:

Originally Posted by Greg Boston
I liked the one with cool led and 50%. Although, the prior frame with just the cool led looked pretty good. The final frame at 100% did seem to overexpose the face just a bit.

=gb=

Yeah, I agree. Unfortunately that image on the web is only a GIF file, but it does show the difference quite well, and in the "moving" video at full resolution the same is true: my favourite is the one with the on-cam coolLED and the spot dayLED at 50%.

Oh, and a Back Light using another dayLED would of made it better also.

Cheers,
Marius
------------

John Bennett September 21st, 2005 02:17 PM

How bright are the Vidled lights? The Website lists 4 watts and 6 watts. Does this mean they are as bright as a 4 watt or 6 watt tungsten light?

Marius Luessi September 21st, 2005 02:25 PM

Quote:

Originally Posted by John Bennett
How bright are the Vidled lights? The Website lists 4 watts and 6 watts. Does this mean they are as bright as a 4 watt or 6 watt tungsten light?

Hey John,
no, the 4W and 6W are what our LED lights use. I would say they are about 15W and 25W tungsten equivalent.
However, our lights are VERY even (no "hotspots") and offer quite a wide, even beam (our coolLED-40 and warmLED-40 versions).

Walter Graff September 23rd, 2005 08:38 PM

You'd be better off with other lights than these which are like flashlights that don't produce full spectrum well. For $125 you could have an efficient light with battery that would put any LED light to shame.

Marius Luessi September 23rd, 2005 08:57 PM

Quote:

Originally Posted by Walter Graff
You'd be better off with other lights than these which are like flashlights that don't produce full spectrum well. For $125 you could have an efficient light with battery that would put any LED light to shame.


Hey Walter: deja vue! We have had these conversations in the past. ;-)
Couple of things: our lights are NOT like flashlights. And two, I can imagine you are probably too busy, but if you could squeeze in a couple of minutes, I would like to send you one of our lights for you to check out yourself. I do know that you have tested LED's "since 2000", but I really think you may be positively surprised with ours.

Let me know,
cheers,
Marius (who is looking forward to watching and learning from your very highly touted DVD on lighting, #1)

Giroud Francois September 25th, 2005 07:16 AM

hello

finished my 2nd led lamp.
here some pictures

leds alone
http://www.giroud2.com/divers/led.jpg

how they are distributed on the heatsink
http://www.giroud2.com/divers/lamp3.jpg

2 views of the finished model.
http://www.giroud2.com/divers/lamp.jpg
http://www.giroud2.com/divers/lamp2.jpg

I just receive the power driver allowing variable illumination (0-100%)
it works very well.


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