LED continuous lighting
Dec 11, 2012 20:54:45 #
http://www.bhphotovideo.com/c/product/863687-REG/GiSTEQ_C8_03_F198C_01_Flashmate_F_198C_LED_Video.html
Does anyone here use the attached type of lighting. I was with someone who was using something like this off the camera for light painting at night. I guess it has variable white balance temperature?
Anyone have experience/examples with one of these? Thanks!
Does anyone here use the attached type of lighting. I was with someone who was using something like this off the camera for light painting at night. I guess it has variable white balance temperature?
Anyone have experience/examples with one of these? Thanks!
Dec 11, 2012 21:56:00 #
picked a 126 led light works fine for shooting and lasts a long time
http://www.newegg.com/Product/Product.aspx?Item=9SIA1EF0CR9462
http://www.newegg.com/Product/Product.aspx?Item=9SIA1EF0CR9462
Dec 12, 2012 11:17:44 #
Since a single LED is fixed in color temperature, the only way to have adjustable color temp would be to blend 3200K leds with 5600K leds, neat trick if that is what is done.
They do not list the lumins output which might be an important limitation depending on how big a scene you are trying to illuminate.
The three reviews were very positive. Let's hear back from anyone who buys this unit.
They do not list the lumins output which might be an important limitation depending on how big a scene you are trying to illuminate.
The three reviews were very positive. Let's hear back from anyone who buys this unit.
Dec 12, 2012 11:44:03 #
Dec 12, 2012 12:28:59 #
Dec 12, 2012 12:29:27 #
Stef C wrote:
they make ones that have differnt K settings dont they?
They "bin" leds by color temperature, so a multiple led unit will have a consistent "K setting".
The early ones and the cheap ones even today project a light with a yellowish center and a large blueish surround. Their color temp was typically over 6500K.
The white led color is gotten from a blue led combined with a yellow fluorescing coating. Blue + Yellow = white.
So a single led can only produce one color temperature which cannot be varied.
Dec 12, 2012 12:34:04 #
Adicus wrote:
The advert states that its dimmable so must be adjustable
All leds are adjustable in intensity by varying the voltage applied.
A single led puts out a fixed color temp light, so its color temperature is not adjustable.
Dec 12, 2012 12:43:54 #
michaelgem wrote:
All leds are adjustable in intensity by varying the voltage applied.
A single led puts out a fixed color temp light, so its color temperature is not adjustable.
Adicus wrote:
The advert states that its dimmable so must be adjustable
All leds are adjustable in intensity by varying the voltage applied.
A single led puts out a fixed color temp light, so its color temperature is not adjustable.
They have adjustable ones though, don't they..?
Dec 12, 2012 12:53:23 #
They have adjustable ones though, don't they..?
A single LED, as I mentioned before, is not adjustable in color temperature.
That is why I said initially:
"Since a single LED is fixed in color temperature, the only way to have adjustable color temp would be to blend 3200K leds with 5600K leds, neat trick if that is what is done. "
A single LED, as I mentioned before, is not adjustable in color temperature.
That is why I said initially:
"Since a single LED is fixed in color temperature, the only way to have adjustable color temp would be to blend 3200K leds with 5600K leds, neat trick if that is what is done. "
Dec 12, 2012 12:54:39 #
I'm sorry, misunderstood. So they variable ones they have just have a mixture of various lights?
Dec 12, 2012 13:00:39 #
Stef C wrote:
I'm sorry, misunderstood. So they variable ones they have just have a mixture of various lights?
That is what I am assuming, since I don't know of any other way variable color temp could be accomplished, given that a single led can produce only one color temp.
Dec 12, 2012 13:08:37 #
BillHill
Loc: Saint Augustine, Fl
If you check the mfg site, this is exactly what they do.
Bill
Bill
michaelgem wrote:
They have adjustable ones though, don't they..?
A single LED, as I mentioned before, is not adjustable in color temperature.
That is why I said initially:
"Since a single LED is fixed in color temperature, the only way to have adjustable color temp would be to blend 3200K leds with 5600K leds, neat trick if that is what is done. "
A single LED, as I mentioned before, is not adjustable in color temperature.
That is why I said initially:
"Since a single LED is fixed in color temperature, the only way to have adjustable color temp would be to blend 3200K leds with 5600K leds, neat trick if that is what is done. "
Dec 12, 2012 13:56:14 #
BillHill wrote:
If you check the mfg site, this is exactly what they do.
Bill
Bill
michaelgem wrote:
They have adjustable ones though, don't they..?
A single LED, as I mentioned before, is not adjustable in color temperature.
That is why I said initially:
"Since a single LED is fixed in color temperature, the only way to have adjustable color temp would be to blend 3200K leds with 5600K leds, neat trick if that is what is done. "
A single LED, as I mentioned before, is not adjustable in color temperature.
That is why I said initially:
"Since a single LED is fixed in color temperature, the only way to have adjustable color temp would be to blend 3200K leds with 5600K leds, neat trick if that is what is done. "
Thanks for that heads up. So if you want daylight at 5500K you are only lighting half the leds. I would prefer dedicating all the leds to 5000k to 5500k to get the most light output at daylight color temperature for a given number of leds.
Dec 12, 2012 16:05:28 #
Dec 13, 2012 11:04:48 #
Good topic I have wondered about this very question about L.E.D.s thanks for clearing it up!
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