On camera light

Bought this 256 led @ 200 watt light. Very impressed with workmanship at such low price. It has no dimmer. It has a knob that increases power in increments of 20% or from 20% to 100%. At less than $140, when I saw it I knew I made a good purchase.

http://www.bhphotovideo.com/c/product/841131-REG/Dot_Line_DL_DV256_DL_DV256_LED_Light.html