Intervalometer with time of day constraints - page 5 - Script Writing - CHDK Forum
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Intervalometer with time of day constraints

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Offline DanielF

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Re: Intervalometer with time of day constraints
« Reply #40 on: 06 / July / 2009, 21:43:26 »
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Yeah, you're right guys - it is a power problem!  My regulated supply is rated for 850mA, which apparently is not quite enough.  Yesterday I wanted to shoot a short movie...  Powered up the A470 (running on my 850mA supply), without loading CHDK, and when I half-pressed the shutter button to pre-focus, the lens parked itself and the camera shut down.

So with CHDK out of the picture, this pretty conclusively tells me it is insufficient power.  So for only AUD25 (delivered) for a Chinese copy of the ACK800, I decided it's time to order one, which I've just done!

Now all I need is for the A470 CHDK port to be completed for long exposures (>15 seconds) and I'll be like a pig in mud.  :D

Daniel
« Last Edit: 06 / July / 2009, 21:47:30 by DanielF »
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Daniel
Gerroa, Australia
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Offline bugsplatter

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Re: Intervalometer with time of day constraints
« Reply #41 on: 06 / July / 2009, 22:34:31 »
Quote from: DanielF on 06 / July / 2009, 21:43:26
Now all I need is for the A470 CHDK port to be completed for long exposures (>15 seconds) and I'll be like a pig in mud.  :D

Hey Daniel, pig in something else where I come from :) 

Another technique for long exposures is to stack many shorter ones, I've done this with D70s for star trails, but somewhere on this forum there's a description -- stacking shots reduces image noise while improving the effective exposure.
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Offline DanielF

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Re: Intervalometer with time of day constraints
« Reply #42 on: 06 / July / 2009, 22:43:30 »
Grant,

Yeah, I've read the stuff about stacking shots.  Trouble is, I'm trying to do a time-lapse series at 30 second intervals.  Even with dark-frame turned off, the 15-second exposures take over 2 minutes to measure/shoot/process, so multiple 15-sec exposures would really throw my timing!
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Daniel
Gerroa, Australia
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Offline bugsplatter

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Re: Intervalometer with time of day constraints
« Reply #43 on: 06 / July / 2009, 23:44:11 »
Okay, fair 'nuff.  One of the things I hope to do one day too is the keep-cam-shutter-open as long as possible, percentage-wise, with good darkframe performance for night time use.  Like taking auto darkframe each 10 shots or so, perhaps stacking, and whatever else seems like a good idea.  
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