The Light Blaster Universal Studio Adapter from Spiffy Gear allows you to project bigger and brighter images by using a studio strobe as your light source instead of an on-camera flash. The adapter has 3 tabs and knurled tightening knobs that slide in channels in its frame to accommodate strobe umbrella reflectors up to 8" in diameter. The adapter is for use with strobe only. The modeling light should be off during use.