get_dof - implementation, accuracy? - Script Writing - CHDK Forum  
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get_dof - implementation, accuracy?

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Offline bugbear

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get_dof - implementation, accuracy?
« on: 15 / July / 2016, 04:26:30 »
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For my present focus/exposure stacking trials, I have hacked up a simple get_dof() based script.

Having done some test runs (with logging) I noticed that it gives a DOF of 1mm
for my Canon A630, full wide, full open, shortest focus.

Is that right? It seems extreme.

Is the implementation of get_dof available as source, or as detailed documentation?

 BugBear
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Offline waterwingz

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Re: get_dof - implementation, accuracy?
« Reply #1 on: 15 / July / 2016, 11:42:49 »
Quote from: bugbear on 15 / July / 2016, 04:26:30
Is the implementation of get_dof available as source, or as detailed documentation?
There is not a lot of detailed documentation about get_dof() (or any CHDK internals) that is easily accessable.  But you can probably find some conversations about get_dof() if you search this forum - typically a google search will work better than the built-in forum search.  Search using this search string for best results :

site:https://chdk.setepontos.com/ get_dof

The source code is available from the assembla svn repository.  You are looking for the function called  shooting_update_dof_values() in the file core/shooting.c
« Last Edit: 15 / July / 2016, 11:45:38 by waterwingz »
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