When you have a dedicated flash unit, adding some accessories can help
you can get the most out of it, resulting in even more creative and
artistic photos. Like nearly every other piece of photographic
equipment, a flash unit has accessories that go with it to enhance the
effects. The following items will help modify the flash, and avoid
problems in your photos, such as harsh or unattractive lighting. Flash
accessories give you subtle, but highly effective means to change the
quality, direction and photographic effects of your standard flash.