Wireless Remote Shutter Release - ideal for wildlife photography, long exposure, astral and studio photography. Timer Remote ideal for time-lapse photography (i.e. blooming flowers, changing landscapes, action shots.) It can also be used as a short cable shutter release to eliminate camera shake. Programmable features include a self-timer, interval timer, long exposure setting and exposure count. These settings can be used in any combination, making the possibilities virtually limitless.