The MK910 is a high-performance CLS-compatible speedlight with a large guide number of 42(ISO 100/M)(111.5/157.5 ft.)(at the 35mm zoom position in Nikon FX format with standard illumination pattern)
Combined with CLS-compatible camera, the MK910 can easily perform various types of flash operations, such as I-TTL auto flash and wireless multiple flash.
Three types of illumination patterns(standard, center-weighted and even) are available to match different shooting preferences.
Power zoom function automatically adjusts the zoom position to match the lens focal length from 18mm to 180mm. When the built-in wide-flash adapter is used or the diffusion dome is attached, the zoom position is automatically set to match a wide angle lens with much shorter focal length.