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G12 manual focus with the screen off

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Offline sean_tamblyn

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G12 manual focus with the screen off
« on: 22 / November / 2012, 17:30:42 »
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The G12 has great manual focus control, but as soon as the screen sleeps/is turned off, the camera reverts to autofocus mode, which kills the deal for certain timelapse applications.  Has anybody encountered a way to maintain manual focus with the G12's screen turned off? 

Thanks,

S.
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Offline waterwingz

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Re: G12 manual focus with the screen off
« Reply #1 on: 22 / November / 2012, 18:05:12 »
Use the set_aflock() script function ?

http://chdk.wikia.com/wiki/Script_commands#set_aflock
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Offline reyalp

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Re: G12 manual focus with the screen off
« Reply #2 on: 22 / November / 2012, 18:08:03 »
Quote from: waterwingz on 22 / November / 2012, 18:05:12
Use the set_aflock() script function ?

http://chdk.wikia.com/wiki/Script_commands#set_aflock
This is probably also reset when the screen turns off.

I believe this problem was discussed elsewhere (G12 development or release thread ?) without any solution.
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Offline waterwingz

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Re: G12 manual focus with the screen off
« Reply #3 on: 22 / November / 2012, 18:10:45 »
Quote from: reyalp on 22 / November / 2012, 18:08:03
This is probably also reset when the screen turns off.
That's too bad - the posted link praises the function for not doing that.  Hopefully its just a G12 issue ?
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Offline philmoz

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Re: G12 manual focus with the screen off
« Reply #4 on: 22 / November / 2012, 18:16:52 »
Quote from: waterwingz on 22 / November / 2012, 18:10:45
Quote from: reyalp on 22 / November / 2012, 18:08:03
This is probably also reset when the screen turns off.
That's too bad - the posted link praises the function for not doing that.  Hopefully its just a G12 issue ?

All G series with optical viewfinder do this.
Once the screen is turned off, by closing it or with the Disp button, the camera reverts to AF.

I suspect Canons logic is that there is no way to focus with the optical viewfinder so MF is not needed.

Phil.
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Offline waterwingz

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Re: G12 manual focus with the screen off
« Reply #5 on: 22 / November / 2012, 19:04:22 »
Quote from: philmoz on 22 / November / 2012, 18:16:52
All G series with optical viewfinder do this. Once the screen is turned off, by closing it or with the Disp button, the camera reverts to AF.I suspect Canons logic is that there is no way to focus with the optical viewfinder so MF is not needed.
Any idea if this applies to all Canon P&S cams with OVF's ?
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Offline reyalp

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Re: G12 manual focus with the screen off
« Reply #6 on: 22 / November / 2012, 19:33:16 »
Quote from: waterwingz on 22 / November / 2012, 19:04:22
Any idea if this applies to all Canon P&S cams with OVF's ?
I suspect so. It's true on my A540.

On my D10 (no OVF), MF is lost when the the camera goes into display off mode, but "focus at infinity" mode is not.
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