i-TTL Macro Ringflash for Nikon D40x D60 D70s D80

New i-TTL MACRO RING FLASH fully dedicated for your Nikon DSLR camera. Ideal for close up macro work for the scientist, forensic specialist, medical or dental fields, investigative professional and hobbyist Features the latest i-TTL exposure technology in a lightweight, easy to use format. Powered by 4 'AA' alkaline or NiMh batteries. Outputs a Guide Number (GN) of 46 with an automatic TTL range of up to 23 feet. Provides approximately 200 flashes on a set of batteries. Extremely simple interface with no hidden menus of features. This provides even, shadow-less lighting for small subjects and close portraits. Will mount on any lens (Nikon or other brand) with the following filter thread sizes (includes all adapters listed) 52mm, 55mm, 58mm, 62mm, 67mm.