How to Skip Half Press while shooting - General Help and Assistance on using CHDK stable releases - CHDK Forum
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How to Skip Half Press while shooting

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Offline NaveedESahar

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How to Skip Half Press while shooting
« on: 04 / March / 2014, 07:16:18 »
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Hi everyone! I'm controlling my SX50 Camera through PC using ptp feature provided by chdk. I want to decrease time between command sent and take photo operations. Currently it takes about 500ms to take photo after command is sent through PC. I want to skip Focus/Exposure on Half press which takes most of time during shooting. Is there any way to skip that step during shooting?? please help
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Naveed E Sahar
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Offline waterwingz

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Re: How to Skip Half Press while shooting
« Reply #1 on: 04 / March / 2014, 08:14:01 »
The set_aflock() & set_aelock() script functions should do what you want.  They will lock focus & exposure at whatever the current setting is, preventing the camera from repeating those steps during the following half-press operations.
http://chdk.wikia.com/wiki/Script_commands#set_aflock
http://chdk.wikia.com/wiki/Script_commands#set_aelock
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Offline reyalp

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Re: How to Skip Half Press while shooting
« Reply #2 on: 05 / March / 2014, 00:56:01 »
Quote from: NaveedESahar on 04 / March / 2014, 07:16:18
Hi everyone! I'm controlling my SX50 Camera through PC using ptp feature provided by chdk. I want to decrease time between command sent and take photo operations. Currently it takes about 500ms to take photo after command is sent through PC. I want to skip Focus/Exposure on Half press which takes most of time during shooting. Is there any way to skip that step during shooting?? please help
The fastest option is to use continuous mode, either rs -cont or the rsint function described in http://chdk.setepontos.com/index.php?topic=6231.490

There are some other discussions of shooting quickly in that thread.
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