Ring flash macro flash camera flash suitable for camera type nikon flash guide number iso 100 34 zoom reflector 28 85mm display type none weight 440 g features readiness indicator flash head movement upwards through to 90 series drr combi ttl flash functions af assist beam second curtain synchronisation flash controls ttl i ttl power supply batteries compatible batteries 4 x aa flash recycling time 0 5 7 s colour temperature 5 500 k dimension