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Camera Power Consumption

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Revision as of 13:42, October 26, 2008 by 210.4.231.226 (Talk)


Q. Does the CHDK firmware consumes additional battery power?

A. Some people measured the battery consumption rate and found that using the CHDK does not affect battery consumption (either not at all, or just minimally). It makes no difference whether the live histogram etc. is activated or not, because the CPU of the camera always works (looking for keyboard presses in the loop). Btw, histogram is calculated even it is not displayed.
But, with CHDK the user usually increases the time when shoot button is half-pressed. Because he is looking at the histogram, zebra, etc. Not just at the green/yellow rectangle.


Here are some measured power consumption rates. The absolute numbers may not be totally accurate. But they should give you an idea about which camera model consumes how much power.


A610 (Maksym)

mode

LCD on/off shutter half pressed y/n flash on/off (special remarks) power consumption in mA

rec

LCD on shutter half pressed flash on 900

rec

- shutter half pressed flash on 800

rec

LCD on shutter half pressed - 500

rec

- shutter half pressed - 400

rec

LCD on - - 300

rec

LCD on - flash on review of photo 800

rec

LCD on - - review of photo 500

play

LCD on - - review of photo 150


A710 (Andrey-nag)

mode

LCD on/off shutter half pressed y/n flash on/off (special remarks) power consumption in mA

rec

LCD on shutter half pressed flash on 350-450 (shooting with flash 400, peaks up to 1400)

rec

LCD on shutter half pressed - 400

rec

LCD on - - video recording 350-375

rec

LCD on - - 325

rec

- - - 25-50

play

LCD on - - some user activity 100

play

LCD on - - idle 75

Additional power consumption when using the CHDK: none


A710 (EWAVR)

mode

LCD on/off shutter half pressed y/n flash on/off (special remarks) power consumption in mA

rec

LCD on - - 600

rec

- - - 150

play

LCD on - - 200

Additional power consumption when using the CHDK: +20 mA

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