The D-BG4 Battery Grip extends shooting times by providing additional power via a second lithium-ion battery or AA batteries. The battery grip includes a tray for either battery option. It also features a vertical release button, depth-of-field preview switch, front and rear e-dials, and buttons for exposure lock and autofocus, as well as a green button and ISO button. The D-BG4 is weather-sealed to protect the battery.
The Pentax D-BG4 is commonly used for Back-up, Digital photography, Photography, Portrait photography, Travel and more.The Pentax D-BG4 is most used by customers who consider themselves to be a Photo enthusiast, Semi-pro photographer among others.The Pentax D-BG4 is popular because customers like the following qualities of the Pentax D-BG4: Easy to install, Fast charge, Long-lasting, Reliable and Solid construction.