Pentax *ist Operating Manual page 27

General existing light photography
Flash photography (using flash 50% of the times)
Flash photography (using flash 100% of the times)
Bulb exposure time
General existing light photography
Flash photography (using flash 50% of the times)
Flash photography (using flash 100% of the times)
Bulb exposure time
The above table is based on Pentax measuring conditions and may vary
depending on shooting conditions.
✍
MEMO
• New CR2 batteries were used under Pentax testing conditions.
• Actual battery life and performance may vary drastically depending on
usage of autofocus, built-in flash and external conditions such as
temperature and freshness of the batteries.
• Generally battery performance is temporarily deteriorated as
temperature decreases. When the camera is used in a cold
environment, keep this product warm by holding it in some protection
against cold. Battery performance once deteriorated due to low
temperature will be recovered when the batteries are returned to room
temperature.
• See page 128 regarding battery life when "Battery Grip BG-20" is used.
About 50 rolls
About 17 rolls
About 12 rolls
About 5 hours
About 30 rolls
About 10 rolls
About 5 rolls
About 1 hours
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