Anatomy of a flashgun
Here’s a quick tour around the Speedlight SB-910, Nikon’s top external flashgun
1 Inside this slot is are a flip-down diffuser panel, which will help to spread the light for wide-angle shots, and a bounce panel for changing the direction of the light, so it needn’t be aimed directly at your subject.
2 This is the flash head. It has a zoom function, so that when you use a longer focal length, the head will detect that and adjust the beam of light to make it narrower so that it goes further.
3 Under this transparent red panel are AF Assist lamps, which light the subject ahead of the flash so that the
camera will be able to focus more easily, ready for when you take the shot.
4 This is the accessory shoe, which slots into the hotshoe on the top of your Nikon. It contains all the electrical contacts that enable the SB-910 to communicate with the camera body to swap distance information and other important data.
5 Like other professional flashguns, the SB-910 has a tilting head. You can angle the head upwards, which is handy for things like bouncing the light off the ceiling.
6 The head also rotates, so you can turn it sideways to bounce the light off a wall or use it with the tilt mechanism to point it in any direction you like.
7 This LCD panel is the SB-910’s control centre. Most of the functions are controlled from within the flash unit, not the camera body.
8 The SB-910 is compatible with Nikon’s Creative Lighting System, and it can communicate wirelessly with other Nikon Speedlights, acting as either a ‘master’ or ‘remote’ flash.