Making my own, I'd worry about spectral qualities particularly for
color work.
However, I prefer to use flash for small object photography anyway.
The Patterson E-Flash units have caught my eye: they're not overly
expensive and are only $75 apiece. Seems about perfect for lots of
uses like this.
http://www.bhphotovideo.com/bnh/controller/home?O=WishList.j
sp&A=details&Q=&sku=296435&is=REG
or
http://tinyurl.com/93h63
Godfrey
On Sep 10, 2005, at 9:48 AM, Bertil Holmberg wrote:
Does anyone have experience of LED lighting panels in photography?
Although there are commercial products available, it should not be
that difficult for the electronics buff to make a couple of panels
quite cheap. White high intensity LEDs are avaialble for about $50
per 100 and that should be enough for small object photography, I
think. With 25-50 light sources mounted close together, a diffusor
seems unnecessary.
What kind of light intensity would be required at a distance of 50
cm (20 inches)? I'm afraid that I know little about the physics
involved apart from that some of it is measured in Candela. Ah, the
Wiki says that a 100W bulb emits about 120 Cd. A 5mm LED can give
20.000 mCd so 100 of the blighters should give 2000 Cd. That sounds
pretty intense, does't it?
Any help is appreciated :-)
Bertil
