Neewer FC100 LED Macro Ring Flash for Canon DSLR Cameras
Features*It is consisted of 32 pieces of LED of high brightness and the average color temperature is 5500k*It could flash or provide the continuous light. The flash range is adjustable, the flash exposure compensation could be set to be +3EV or -3EV, and thus it is especially suitable for macro photography*With the function of pre-flash, it is easy for you to judge the brightness of the light. The lights could be turned on fully or partially (on the left or right only)*If the macro ring light is not used for 30 seconds, it would be in the "Deeper Sleep" status. You could press any button or release shutter to wake up the light*Power: 4 AA Batteries ( Chargeable and rechargeable ones are both compatible)*With 7 adapter rings with the diameters of 52mm, 55mm, 58mm, 62mm, 67mm, 72mm and 77mm, it could be used with all kinds of lensesCompatible with:Canon EOS 1D/ 1Ds Series7D/5D MarkII/60D/50D/40D/30D/20D/10D550D/500D/450D/400D/350D/300DSpecifications:*Guide Number: 15GN*Flash Range: 5--150cm*Color Temperature: 5500k*Sync Speed: 1/100S*Power: 4  AA Batteries*Weight of the Kit: Approx. 230gpackage contents:1X FC100 LED MACRO RING FLASH FOR CANON1X (52mm-77mm) Adapter Ring Kit**4 AA Batteries NOT INCLUDED **