Loosing focus between shots - General Help and Assistance on using CHDK stable releases - CHDK Forum
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Loosing focus between shots

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Offline gvanhau

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Loosing focus between shots
« on: 16 / September / 2009, 12:40:44 »
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Hello

I have been using CHDK for several moths in my Powershot A610 with no problems.
Now Is was trying to use the same interval scripts on a a Powershot A590is and noticed that the camera looses focus between shots.
I Tried the same also in a a530 and got the same problem.
The cameras are set in manual focus and no focus bracketing is active.

I modified the scripts to show focus distance beteen shots an the value displayed changes almost each time, with some execptions.
For the moment to overcome the isue, I have modified the script to read the focus before the first shot an then force the distance between each shot.

Has anybody seen the same efect? Could it be a fabrication defect of the A5xx series? or could it be a chdk defect?

any comments or help apreciated.

Regards
Geert
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Offline hotvedt

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Re: Loosing focus between shots
« Reply #1 on: 16 / September / 2009, 15:36:33 »
Do you have the display on or off while running the script?
Edit: ignore this, i see you have it on.
« Last Edit: 16 / September / 2009, 15:38:39 by hotvedt »
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Offline clj

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Re: Loosing focus between shots
« Reply #2 on: 15 / October / 2009, 03:31:53 »
hello,

I got the same with my poxershot sx200...
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Offline gvanhau

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Re: Loosing focus between shots
« Reply #3 on: 16 / October / 2009, 00:29:01 »
Hello,
I recently found out (after a lot of reading and searching) that the cause of this focus loss was that the "safety MF" was turned on.
I disabled this feature in the setup menu and the problem is now gone.

Thanks everybody for your help
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Offline clj

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Re: Loosing focus between shots
« Reply #4 on: 16 / October / 2009, 09:25:29 »
hello,

I'm sorry, I can not find the "safety MF" within the menus...could you precise where ?

thanks.
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Offline gvanhau

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Re: Loosing focus between shots
« Reply #5 on: 16 / October / 2009, 15:17:42 »
Hello
Tis is located in the first menu of my A590
(Menu key without CHDK activated)

may be it is located in another menu in your camera?

Regards
Geert
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