Recycling TimeIt takes time for a flash unit to recharge between bursts, and this is known as the recycling time. With some types of photography, it doesn't matter if you have to wait several seconds between shots; with other types, quick recycling is essential. Flash manufacturers publish recycling times for their units at various power settings (units recycle more quickly after brief low-power bursts than after longer full-power bursts). Bear in mind that these published times may be somewhat optimistic, especially for battery-powered units as the battery wears down.
TriggeringWhile dedicated camera-mount flash units are triggered via the camera's hot-shoe, studio flash systems are triggered via sync cords. So you need a camera body that has a PC socket to connect the studio flash system. All pro DSLRs and many mid-range models have this.
Most of today's DSLRs offer wireless off-camera flash with TTL exposure control when used with appropriate dedicated flash units. Studio flash units don't offer automatic exposure control, and exposure is generally determined via a flash meter. But many of today's studio systems do offer either built-in or accessory means of triggering wirelessly via infrared or radio signal. This eliminates cords running from camera to power supply or monolight units, and is the preferred way of working with studio flash today.
Paul C. Buff
Profoto (MAC Group)
« Prev 3/3 Next