About: CHDK Manual Focus and Subject Distance Overrides   Sponge Permalink

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However, determining how to use CHDK to reliably manually focus a camera's lens can be difficult as many cameras need to be configured a little differently. This applies to both the "set_focus()" command in CHDK scripts, or the "Override Subject Distance" menu item in the CHDK's Enhanced Photo Operations menu. This problem is caused by there being no standard method that works for every camera that allows you to enable manual focus using CHDK. Some cameras will immediately focus whenever a set_focus() script command is issued or SD override via menu..

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  • CHDK Manual Focus and Subject Distance Overrides
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  • However, determining how to use CHDK to reliably manually focus a camera's lens can be difficult as many cameras need to be configured a little differently. This applies to both the "set_focus()" command in CHDK scripts, or the "Override Subject Distance" menu item in the CHDK's Enhanced Photo Operations menu. This problem is caused by there being no standard method that works for every camera that allows you to enable manual focus using CHDK. Some cameras will immediately focus whenever a set_focus() script command is issued or SD override via menu..
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  • However, determining how to use CHDK to reliably manually focus a camera's lens can be difficult as many cameras need to be configured a little differently. This applies to both the "set_focus()" command in CHDK scripts, or the "Override Subject Distance" menu item in the CHDK's Enhanced Photo Operations menu. This problem is caused by there being no standard method that works for every camera that allows you to enable manual focus using CHDK. Some cameras will immediately focus whenever a set_focus() script command is issued or SD override via menu.. Others will only focus when the camera's built-in autofocus is locked (AFL) prior to a set_focus() or SD override via menu. And still others need the camera to be in Canon manual focus (MF) mode before you can focus via CHDK set_focus() or SD override via menu. Listed below are some notes collected from various CHDK forum posts and wiki pages that should help you determine how to enable manual focus via CHDK for your camera. A Lua script is also given to simply determine what works for a particular camera.
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