Slave units In the usual set-up, the flash connected to the camera is the master light.
When this unit fires, sensors, known as "slaves", attached to any other lights, fire their-flash units in synchronization.
This removes the need for all flash units in a multi-light set-up to be cabled to the camera.
Continuous light sources Tungsten-halide lights give a high output but also a great deal of heat and rather a hard lighting quality.
HMI lamps offer high output at lower operating temperatures but they are expensive and complicated lights.
Professional fluorescent lights are a good solution for digital photography: the light is diffused, colour temperature is stable, and they run cool compared with tungsten units.
Equipe Studio Hi-Lite A very compact and lightweight head is the benefit of separating the power unit from the lamp.
This unit packs a powerful flash output, as well as having a strong modelling light to allow you to preview the fall of shadows.
Generator A separate generator keeps controls and the power supply separate from the lamp itself.
This arrangement allows for faster recharging times and more flexible control of the power output.
Esprit Digital Touch-sensitive controls and digital readouts of power on this monobloc unit help to ensure consistent and repeatable results - important factors for professional set-ups.
Digital controls allow changes to be made in very fine increments.
Remote control unit A further advantage of the digital control of flash power and mode settings is that units can be set remotely.
This handset, working much like a television remote, can control up to eight different units.