Paul C. Buff, Inc. Technical Forum

Here's a link from David Hobby with 3W LED modeling lamp that fits AB. Could be great for a little bit of modeling when using VML, and should light for hours on end.

Haven't found one to fit Einstein yet . . . but we do have a high brightness 35W quartz under evaluation for E640.

http://strobist.blogspot.com/2011/02/fo ... -your.html

Excellent. I'll have to give these a try. I've been looking for some lower heat output bulbs for the product table.

Although Mr. Hobby has tasted a bit of the bulb-scammer's Kool-ade. LED bulbs get about 5x the lumens/watt of tungsten, not 10x. They're not magic.

You're right about efficacy. Standard tungsten bulb are typically 17 Lumens per Watt while most LEDs are around 50 L/W. LEDS in development have gone over 100 L/W but these are not common and are very expensive. Also, the higher the color temperature, the greater the efficacy because the emitted light covers a wider spectrum. But 7000°K light is unnatural for many, and the human eye falls off in sensitivity to the blue/magenta range, so some of the increased efficacy of "bluish" LEDS may not show up as increased visibility.

Still, all in all, I believe LEDs will render CFI lamps obsolete a few years from now when cheaper brighter LEDs begin to reach maturity.

One concern I have with LED modeling lamps is the flashtube can really get hot and could potentially overheat LEDs and cause failures.

I don't know the first thing about bulbs or bases, but might any of these offerings (same mfr. as your link) possibly work with einstein (JD250W/DC)?

List of Ledtronic's DC based LED's (pricey!)
http://www.ledtronics.com/Tools/IncandescentCross.aspx?filter_bulb_number=&filter_bulb_base=DC+Bayonet&filter_bulb_type=&filter_base_no=&filter_color=White

http://www.ledtronics.com/Products/ProductsDetails.aspx?WP=C68K1150