Yongnuo YN-565EX ETTL Speedlite Flash for Nikon (Discontinued by Manufacturer) Metering system of the camera will detect flash illumination reflected back from the object so as to automatically control flash output level YN-465 has 7 different flash power levels (1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64) in the manual mode Guide number: 33 Color temperature: 5,600K Compatible with Nikon i-TTL cameras (not compatible with D100 D50 D2Hs D2X D70 D2H)