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Building a mult-camera rig

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Hi All

I was busy with other projects  :(

I tried to use the latest A2500  (a2500-100a-1.3.0-3805-full_ALPHA.zip )
and the optical distortion at zoom remains


I would appreciate your help


regards

*

Offline srsa_4c

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and the optical distortion at zoom remains
Can you please check whether get_prop(198) returns the zoom value you set previously with set_zoom() ?
If you're using chdkptp to issue the commands, you could do something like:
=set_zoom(32)
=return get_prop(198)


Here's a distortion test for SX150IS (has physical aperture) completed using chdkptp.

An levent shot was followed, 5 min later, by a set_zoom shot. The subject was an Excel spreadsheet grid at the far end of the kitchen table. To my untrained eye (see attached), distortion does not seem to be a problem - thankfully (since i'm not sure I like the look of this http://chdk.setepontos.com/index.php?topic=11667.msg117844#msg117844). The only difference in the EXIF's (notepad++ compare) is  "Measured EV" in first shot = 7.88 & second = 7.91

Code: [Select]
> lua post_levent_to_ui('PressWideButton')
> lua post_levent_to_ui('UnpressWideButton')
> lua post_levent_to_ui('PressTeleButton')
> lua post_levent_to_ui('UnpressTeleButton')
> =return get_zoom()
13:return:127
>  =return get_focus()
14:return:1167
>  lua post_levent_to_ui('PressSwOne')
> lua post_levent_to_ui('PressSwTwo')
> lua post_levent_to_ui('UnpressSwTwo')
> lua post_levent_to_ui('UnpressSwOne')
> =return get_focus()
19:return:1152
>  lua post_levent_to_ui('PressWideButton')
> lua post_levent_to_ui('UnpressWideButton')
> =set_zoom(127)
> =return get_zoom()
23:return:127
> =return get_focus()
24:return:1202
> lua post_levent_to_ui('PressSwOne')
> lua post_levent_to_ui('PressSwTwo')
> lua post_levent_to_ui('UnpressSwTwo')
> lua post_levent_to_ui('UnpressSwOne')
> =return get_focus()
29:return:1152
> =return get_prop(198)
34:return:0


What i'm not really sure about is:

  • why the focus distance difference (can a small change in ambient light account for such a change by autofocus)? ::)
  • significance of the get_prop(198) return value?
« Last Edit: 10 / January / 2015, 10:57:21 by andrew.stephens.754365 »

Re: Building a mult-camera rig
« Reply #223 on: 17 / January / 2019, 06:01:07 »
How do you load the bcamHost.lua?
I don't understand how to run it on the PC, I've successfully run the bcamRem.lua on the camera by loading it via card reader to the card and run it with "Load Script from File..."


 

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