What is an optical slave trigger?

Optical slave trigger – A light sensitive sensor at each remote flash, which triggers the flash in sync when it sees the flash of another manual flash unit. This light path can be reflected from close walls or the photo background, but light is line of sight, normally blocked by obstacles.

Can any trigger work on any flash?

Every brand, and in some cases even different lines of flash units of the same brand, uses a different RF protocol for remote control and firing of Manual or TTL flash units so they will only work with the specific trigger designed for that specific brand and type of flash.

When should I use digital slave flash?

Why use a slave flash. You could use the slave flash to light nooks and crannies in interior shots where the on camera flash can’t reach such as cupboards, alcoves, underneath arches etc. In portraiture it can be used to provide a hair or rim light for a model shoot or a side light for enhanced lighting.

What is S1 and S2 in Speedlight?

S1 and S2 Modes can be used to simply and quickly set up and trigger multiple flash units in a large area. Where S1 and S2 modes differ is in which at what point the flash set to optical slave mode will be triggered. This can be different for the different models of.

When should I use slave flash?

You could use the slave flash to light nooks and crannies in interior shots where the on camera flash can’t reach such as cupboards, alcoves, underneath arches etc. In portraiture it can be used to provide a hair or rim light for a model shoot or a side light for enhanced lighting.

Why is it called slave flash?

One huge thing is a button on every strobe, light pack, and flash unit made in the photo industry called “slave” mode. Essentially it is used to instructs a flash unit to monitor incoming light, and fire when it senses the light produced by another flash unit firing unit called “master” to fire.

What is Master vs slave flash?

The master flash is the one fired directly by the camera. Slave flashes see the light of the master and fire in response to that. Therefore they do not have to be connected to the camera, they only have to be able to detect the flash of the master one firing.