White LEDs for studio lighting?

Does anyone have experience with, or thoughts about, the
practicality/suitability of using high wattage white LEDs for studio
lighting applications?


Thanks in advance,


Lohkee

 

I've cooked chicken in the dark by LED -- it's not a pretty sight. I
suspect the spectrum is completely wrong for photography, although it may
be possible to correct colors in software. You might do a search to see if
you can find the spectrum of white LEDs and see how that compares to
incandescent lamps and fluorescent lighting.

 

You might want to check out this page
http://www.photoprojects.net/index8.html
I recalled seeing it a while back, the author has been experimenting with
LEDs in ringlights for macro work, he might have some information to share
on the topic.

 

Cost, Cost, very expensive.

 

The spectrum of the white LED consists mostly of yellow and blue light.
Nearly no red. So while this light looks whit (because the yellow photons
trigger the read and the green sensors in the human eye) the color of
objects is greatly distorted: red objects look very dark.

-Michael

 

I've not tried it, but it would seem as though the LEDs wouldn't be
very bright. I occasionally visit an LED forum frequented by
almost-rabid LED flashlight fans. They're realistic enough to realize
that LEDs don't work very well for general room lighting--not bright
enough.

I have a Nikon LED macro light, but haven't had to use it, yet.

Orrin

 

Do you think it would be possible to offset this effect by mixing/tuning the
LEDs, i.e. an RBG array?

Lohkee

 

I would agree if we were talking about "normal" 5mm LEDs. There is a company
producing "LEDs on steroids" (Lumiled) called the Luxeon. Unlike normal LEDs
these puppys run at up to 1000mA. They have been used (5 LED array) to
produce automobile headlights in the new audi (so I am assuming they are
fairly bright). I would agree that LEDs are not (as yet anyway) suitable for
general room lighting, however, I guess my question is this: Is this really
important to the photographer who in my (admittedly very limited) experience
seems interested only in lighting a subject in front of the camera? It seems
to me that LED studio lighting would have numerous benefits to the
photographer; low power consumption, low lifetime maintainance, very small
and lightweight, AC/DC operation (portability), low heat generation (perhaps
not such a big plus for those working with the nude), etc. I can see where
they might not work so well with film cameras due to a lack of automatic
white balance, but digital equipment should overcome this? I would be very
interested to hear of your experince with your new ring light.


regards,


Lohkee

 

if you really want...
There are companys that makes LED arrays for street lights...
http://www.led.net/datasheets/traffic_index/traffic_index.htm
billboard illumination...
http://www.oksolar.com/billboards/
http://www.oksolar.com/stl/stl_parts_fixtures.htm

google LED "street lights" - lots to choose from...

 

1000 White LED Light

I own 1000 White LED Light Film Lighting Equipment Gel Filters Stand1080P...I really like the lights..

They perform pretty good and gives top notch quality....