Bower SFDRF Digital MACRO Ring Light Flash for Nikon, Canon, Pentax and Olympus Digital and 35mm SLR Cameras Tripod Socket, Built-In diffuser, Multi-function on / off / test fire switch Use off lens for creative lighting control, Compact Ring flash head weighs only 4.2oz Offers a choice of manual or auto-sensor control Connect directly with 58mm lenses, and includes 3 adapter rings (52mm, 55mm, and 62mm) Provides diffuse, color corrected and shadow free light, Fires as fast as 1/50,000th of a second to freeze movement