Nikon Df - Manual (Page 387)

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Battery Life
The number of shots that can be taken with a fully-charged
EN-EL14a battery varies with the condition of the battery,
temperature, and how the camera is used. Sample figures are
given below.
• CIPA standard
1 : Approximately 1400 shots
• Nikon standard 2 : Approximately 2900 shots
1 Measured at 23 °C/73.4 °F (±2 °C/3.6 °F) with an AF-S NIKKOR 50mm
f/1.8G (Special Edition) 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.
2 Measured at 20 °C/68 °F with an AF-S NIKKOR 50mm f/1.8G (Special
Edition) lens under the following test conditions: image quality set to
JPEG basic, image size set to M (medium), 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 standby timer expires.
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 a GP-1or GP-1A GPS unit
• Using an Eye-Fi card
• Using a WU-1a wireless mobile adapter or WR-R10/WR-1 wireless
remote controllers
• Using VR (vibration reduction) mode with VR lenses
To ensure that you get the most from rechargeable Nikon
EN-EL14a 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.