June 8, 2011: I have redesigned the LED rings with a much sleeker profile, lighter weight, higher output, and a much deeper, more saturated green. See new pics to right (the green LED rings presently ship with a white circuit board--the mounting ring is black, same as the blue LED rings).
I hand-make each LED ring, which includes a mini XLR with locking mechanism, ample lead wire, and a vacuum formed lens cover to protect the LED's.
Green or Blue... which should I shoot with?
Each system comes with both blue and green colored rings. If you are shooting DV, green tends to carry a little more information and will probably be best for most applications, though blue is still very effective, especially if your subject is wearing something green!. I have read that, as a general rule, the blue chroma channel can be inherently grainy and noisy, especially in low-light situations. However, tons and tons of video is shot every day using a blue screen, so it is certainly a viable color, depending on your format, amount of light, etc.
Mounting:
The rear of the LED ring has standard
72mm lens threads and will screw directly
onto lenses with the same. If your lens threads are slightly larger or smaller than 72mm,
a generic filter step-ring can be had
for a few bucks via ebay, B&H or
the local camera shop.
In the following two B&H links, you can select your camera lens thread size on the left:
Step Up Rings (if your lens threads are smaller than 72mm)
Step Down Rings (if your lens threads are larger than 72mm)
