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| *SoulEyes Photography>>>Flash Photography |
In Flash photography what is meant by slave and master units? |
In Flash photography what is meant by slave and master units? To clarify on the earlier answer... In some situations - especially large rooms, you need to have more than one flash. This might be just to get enough light, or to eliminate shadows caused by having a single source, or for other esthetic reasons. Rather than have all the lights connected by cable to the camera, what is done is to have one flash on (or very near) the camera, and have the others watch for that flash and then go off then they see it. Obviously, the one by the camera is the master, and the other(s) are the slaves. Some flashes have the ability to be a slave built in; for others you can get an adapter which the flash unit mounts onto. the main flash is the master, and any other flash (secondary) is the slave flash "Ossininger" had it right. However, a word of caution if you're using a digital camera. Many (if not most) digital cameras produce 2 flashes from the camera mounted unit, one to check the lighting/exposure level, and the main flash to actually take the picture - often too fast for your eye to sense two flashes. Many slave flashes will trigger on the first flash only, making the picture under exp posed. You'll have a buy a special digital slave flash in this case... it refers to flashes that were made by slaves in developing countries i highly recommend you boycott |
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