The Nikon D90 digital Single-Lens Reflex (dSLR) camera uses the ML-L3 wireless remote shutter release. A wireless remote allows you to take self portraits or to reduce camera shake by operating the shutter release without physically touching the camera. The ML-L3 wireless remote has a range of approximately 16 feet and when the camera is set for auto-focus, the ML-L3 will allow the camera to focus before a photograph is taken. The built-in flash as well as optional speed-flash units will work (when attached to the camera) with the wireless remote.
7 The ML-L3 wireless remote is an optional item, not supplied with the camera, and must be purchased separately.The ML-L3 is powered by a 3-volt CR2025 battery.The ML-M3 wireless remote uses infrared light to control the shutter and must have unobstructed, line-of-sight alignment with the front of the camera.
Compose your photograph as normal and set the camera for auto-focus (auto-focus is set by moving the switch located along the left-hand side of the lens mount to AF). The camera shutter-release button (located on the top, right-hand side of the camera body) will allow auto-focus when using the wireless remote by pushing the remote button half-way down.
Allow the flash to re-charge when using the built-in flash or an optional speed-flash. Push the shutter-release button to take additional photographs.