SD870 / IXUS860 battery life for time lapse shots - page 2 - General Chat - CHDK Forum
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SD870 / IXUS860 battery life for time lapse shots

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Offline PhyrePhoX

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Re: SD870 / IXUS860 battery life for time lapse shots
« Reply #10 on: 17 / July / 2008, 08:28:23 »
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exactly that is present on the s3is. so maybe it IS hidden on other cams.see #62 in for devs: vacant jobs, must-have features, status & overview / for users: a poll
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Offline fe50

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Re: SD870 / IXUS860 battery life for time lapse shots
« Reply #11 on: 17 / July / 2008, 08:53:00 »
Quote from: LjL on 17 / July / 2008, 07:54:03
But isn't turning off the display entirely much better than switching to playback mode, anyway?
I think so, too - but on the Ixus 860 the display automatically turns on again on some situations, e.g. when the rotation sensor detects movement.

Quote
When I turn off the display by pressing DISP, the shutter closes, and I believe the sensor is powered off, too.
The "workaround" i've described above is because the Ixus 860 (and probably all Ixus models without an optical view finder) don't switch off the display with the DISP key, you can only toogle between the OSD information state (no OSD / OSD / Histogram + Data).
So with assigning the PRINT button to "Display off" you have a compensation to this, this can also be used in scripts.
The display turns on again after a keypress or the shoot command in a script, so you have to turn it off again...

On the Ixus 860 it seems that this "Display Off" method have the same effect as switching to playback mode, in both cases you can hear the shutter closing, the power consumption get's down noticeable, the internal image proccessing will be stopped...
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Offline aldog

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Re: SD870 / IXUS860 battery life for time lapse shots
« Reply #12 on: 17 / July / 2008, 10:54:21 »
Quote from: fudgey on 17 / July / 2008, 01:38:12
Quote from: aldog on 16 / July / 2008, 19:57:15
When you say that record mode consumes more power than play mode, are you referring to playback mode?
If so I don't get how that's relevant with this discussion, because it's not general power consumption we're talking about, it's how long the batter would last during a time lapse.

Yes play mode means playback mode. Of course it's relevant, because in future scripts will be able to switch the camera between rec/play modes (there are some builds for some models that already can, I think). For slow timelapses, a script that waits in play mode modes could give you significant power savings.
ohhh, okay, I get what the advantage is now.


I just did test #3
Ultra Intervolometer Script
Headphone jack plugged into camera to disable display this time
10s between shots
Stock canon nb-5l 3.7v 1120 mAh Li-ion
It took 724 shots, 3 hours and 24 minutes.
So plugging in the headphone jack gave me 40 more minutes of shooting time.
next up is the script that fe50 posted
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Offline fe50

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Re: SD870 / IXUS860 battery life for time lapse shots
« Reply #13 on: 18 / July / 2008, 08:34:36 »
My test results with the script above:

1085 pictures in 4:58 hours  ::)

Settings:
  Original Canon battery Li-Ion NB-5L, 3.7V 1120mAh
  Interval=10s, Fine, 2M 1600x1200, no flash, Battery was ~ 90-95%, no A/V connector, "Script shoot delay" 20x0.1s

There should be > 10% more battery lifetime by optimizing the script (shorter sleep commands & "Script shoot delay") and additionally use of an A/V plug...
(Data by Canon: 270 pics @ CIPA standard with  LCD on)
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Offline aldog

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Re: SD870 / IXUS860 battery life for time lapse shots
« Reply #14 on: 22 / July / 2008, 15:03:44 »
wow nice numbers.
I'll make it official later but on friday I drove from salt lake to vernal, 45 second interval, the script you posted, no flash, full size, best quality, a/v connector, original battery.
it gave me 400 pictures, i don't know the time right now.
it was actually EXACTLY the right amount of time until the battery died, we had just pulled up to the campground and it died as we got out of the car
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Offline fe50

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Re: SD870 / IXUS860 battery life for time lapse shots
« Reply #15 on: 22 / July / 2008, 15:17:59 »
aldog,
nice, should be ~ 5,5h duration (every 50s one shot), as expected...that's really great for such a small battery...
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Offline bromsgrove man

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Re: SD870 / IXUS860 battery life for time lapse shots
« Reply #16 on: 15 / January / 2011, 08:39:15 »
Just want to say thank you for posting the script here in this thread. Just installed CHDK on my Canon SX110 and its the first thing I've tried. Seems to be working a treat. Many thanks.
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Offline nodnarb22

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Re: SD870 / IXUS860 battery life for time lapse shots
« Reply #17 on: 29 / January / 2012, 17:56:53 »
Quote from: fe50 on 22 / July / 2008, 15:17:59
aldog,
nice, should be ~ 5,5h duration (every 50s one shot), as expected...that's really great for such a small battery...

Anyone help explain the warning around long duration shooting with this script?... wouldn't this be better than leaving the screen on or other scripts?.. if it is sensor temp this was running around 70F for me with no issues after 3 hours.
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Offline waterwingz

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Re: SD870 / IXUS860 battery life for time lapse shots
« Reply #18 on: 29 / January / 2012, 18:18:49 »
Quote from: nodnarb22 on 29 / January / 2012, 17:56:53
Anyone help explain the warning around long duration shooting with this script?... wouldn't this be better than leaving the screen on or other scripts?.. if it is sensor temp this was running around 70F for me with no issues after 3 hours.
I don't see where you think there is a "warning" here ? The thread seems to be about how long the battery will last during intervalometer shooting.

There is a warning in the script - I suspect that's because it takes pictures as fast as possible in a tight loop.  Maybe the author was worried that you would wear your camera out in that mode ?
« Last Edit: 29 / January / 2012, 18:22:42 by waterwingz »
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Offline nodnarb22

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Re: SD870 / IXUS860 battery life for time lapse shots
« Reply #19 on: 04 / February / 2012, 09:36:27 »
I may have misquoted the wrong post. but the script has a warning about not using it for long periods of time. was wondering what the concern was. from what i have been able to read it may be the focusing motor.
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