OK. After reading through some of this, um, easy to ready document I think I can see why CIPA numbers are lower than what real life tests are showing. Some examples:
"2.9 Motor driven optical zoom operation Before every picture is taken, the motor driven
optical zoom lens shall be moved either from the TELE end to the WIDE end, or from the
WIDE end to the TELE end. It is also acceptable to move the zoom lens either as
TELE→WIDE→TELE, or as WIDE→TELE→WIDE before every second picture is taken.
Except for the motor driven optical zoom operation, nothing is specified for other zoom
operations such as a digital zoom operation."
Normal usage is not to zoom between TELE to WIDE (or visa versa) between every shot.
"2.16 Color monitor on/off mode (see Explanatory Notes)
a)For the duration of the test, the color monitor shall be lit continuously in the mode in which it
can be used as the viewfinder. If during the test the color monitor turns off automatically, or if
it automatically shifts into other modes, it shall immediately be turned back into the viewfinder
mode either by an automatic or manual operation (other than by replacing batteries or power
cycling), and the test shall be continued. For cameras equipped with two or more color
monitors, the test can be conducted with only the most power consuming one lit continuously.
b)If the color monitor is equipped with an illumination function (e.g. backlight), the illumination
shall be lit for the duration of the test. If the brightness or the contrast of the color monitor is
adjustable, the adjustable parameter shall be set at the factory setting when the measurement is
made."
If I am reading this correctly it means the read LCD must be on and active 100% of the time--or as near as 100% as can be done. That would indeed drain the battery quite quickly.
Thanks for the link. I don't understand why the testing procedures were picked but it does let me know I don't really care about CIPA numbers for battery life at all.
If CIPA designed car mileage tests:
"Vehicle shall be tested with 4 flat commercial grade tires all-terrain tires, 4 sumo wrestlers inside, parking brake half engaged, and towing an M-1 tank. Driver shall repeatedly apply full throttle until max speed is achieved, then apply maximum brakes until stopped. Repeat until fuel is exhausted."
Aug 18, 2020 at 10:11 PM
Previous versions of Mike_5D's message #15321318 « Is anyone else getting *dramatically* better battery life than the CIPA numbers? »
