Nikon 25442 D3X User's Manual - Page 467
Battery Life, CIPA standard
UPC - 018208254422
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A Battery Life The number of shots that can be taken with a fully-charged EN-EL4a battery (2,500 mAh) varies with the condition of the battery, temperature, and how the camera is used. Sample figures are given below. • CIPA standard: Approximately 4,400 shots. Measured at 23 °C/73.4 °F (±2 °C/ 3.6 °F) with an AF-S NIKKOR 24-70mm f/2.8G ED lens under the following test conditions: lens cycled from infinity to minimum range and one photograph taken at default settings once every 30 s. Live view not used. • Nikon standard: Approximately 5,300 shots. Measured at 20 °C/68 °F with an AF-S VR 70-200mm f/2.8 ED lens under the following test conditions: image quality set to JPEG normal, image size set to L (large), shutter speed 1/250 s, shutter-release button pressed halfway for three seconds and focus cycled from infinity to minimum range three times; six shots are then taken in succession and monitor turned on for five seconds and then turned off; cycle repeated once exposure meters have turned off. The following can reduce battery life: • Using the monitor • Keeping the shutter-release button pressed halfway • Repeated autofocus operations • Taking NEF (RAW) or TIFF (RGB) photographs • Slow shutter speeds • Using the optional WT-4 wireless transmitter • Using the optional GP-1 GPS unit • Using VR (vibration reduction) mode with VR lenses To ensure that you get the most from rechargeable Nikon EN-EL4a batteries: • Keep the battery contacts clean. Soiled contacts can reduce battery performance. • Use batteries immediately after charging. Batteries will lose their charge if left unused. • Check the condition of the battery regularly using the [Battery info] option in the setup menu (pg. 355). If [j] is displayed for [Calibration], calibrate the battery using the MH-22 quick charger. n 441