Canon 850 IS - Manual (Page 135)

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Battery Capacity (Battery Pack NB-5L (Fully charged))
The actual figures will vary according to the shooting conditions
and settings.
Movie data is excluded.
At low temperatures, the battery performance may diminish and
the low battery icon may appear very rapidly. In these circum-
stances, the performance can be improved by warming the bat-
tery in a pocket before use.
Test Conditions
Shooting: Normal temperature (23 °C ± 2 °C/73 °F ± 3.6 °F),
normal relative humidity (50% ± 20%), alternating wide
angle end and telephoto end shots at 30 second intervals
with the flash fired once every two shots and the camera
power turned off after every tenth shot. Power is left off
for a sufficient amount of time*, then the power is turned
back on and the testing procedure is repeated.
A Canon-brand memory card is used.
*Until the battery returns to normal temperature
Playback: Normal temperature (23 °C ± 2 °C/73 °F ± 3.6 °F),
normal relative humidity (50% ± 20%), continuous
playback at 3 seconds per image.
See Battery Handling Precautions (p. 121)
Number of Images Shot
Playback Time
LCD Monitor ON
(Based on the CIPA
standard)
LCD Monitor Off
Approx. 270 images Approx. 600 images Approx. 6 hours