who can write a Focus shooting Script for Sx40 hs - Script Writing - CHDK Forum
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who can write a Focus shooting Script for Sx40 hs

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Offline viwoo

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who can write a Focus shooting Script for Sx40 hs
« on: 14 / July / 2012, 03:40:23 »
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who can write a Focus shooting Script for Sx40 hs  。

I'm chinese，my english very bad。

want have a Script for SX40 HS. Requirement：Continuous shooting two。the first，According to the focus of AF。Second，Forced focus at 2CM（maybe Macro） shooting.

use the two pics to make Bokeh in CHDK’s Script or  in PS
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Offline waterwingz

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Re: who can write a Focus shooting Script for Sx40 hs
« Reply #1 on: 14 / July / 2012, 11:02:08 »
Quote from: viwoo on 14 / July / 2012, 03:40:23
who can write a Focus shooting Script for Sx40 hs  。
 the two pics to make Bokeh in CHDK’s Script or  in PS

Here you go :

Code: [Select]
@title Bokeh
print "Bokeh"
  shoot
  set_focus 20
  sleep 500
  shoot
print "done"
end
You will have to combine the pictures on your computer - its not possible to do with a CHDK script.

Also,  your camera might need to be in "P" mode rather than "Auto".
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Offline msl

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Re: who can write a Focus shooting Script for Sx40 hs
« Reply #2 on: 14 / July / 2012, 13:09:01 »
I'm afraid this does not work because the sx40 has a native MF mode. We must switch into the MF mode for set_focus. This only works with Lua.

Here is a sample script (not tested):

Code: [Select]
@title bokeh
@param f focus [mm]
@default f 20
]]

function switchAF_MF()
    post_levent_for_npt("PressSw1AndMF")
    sleep(500)
end

-- first shot
shoot()
Tv=get_tv96()
Av=get_av96()
repeat sleep(10) until get_shooting() ~= true

-- second shot
switchAF_MF()
set_tv96_direct(Tv)
set_av96_direct(Av)
set_focus(f)
shoot()
repeat sleep(10) until get_shooting() ~= true
switchAF_MF()

print("done")
Probably there is yet another problem with the minimum distance. See platform_camera.h for the SX40.
Code: [Select]
#define CAMERA_MIN_DIST                     95      // Override min subject distance
msl

edit: script corrected, thx ww.
« Last Edit: 14 / July / 2012, 13:37:55 by msl »
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Offline waterwingz

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Re: who can write a Focus shooting Script for Sx40 hs
« Reply #3 on: 14 / July / 2012, 13:13:58 »
Quote from: msl on 14 / July / 2012, 13:09:01
I'm afraid this does not work because the sx40 has a native MF mode. We must switch into the MF mode for set_focus. This only works with Lua.

That explains why the uBASIC script works on my SD940 and not my G10.   Was going to look at that later today - I'll try your version.

Update :  tested your script -works on my G10.   The line that says

Code: [Select]
set_av96_direct(Av96)
should be

Code: [Select]
set_av96_direct(Av)
« Last Edit: 14 / July / 2012, 13:29:22 by waterwingz »
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Offline viwoo

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Re: who can write a Focus shooting Script for Sx40 hs
« Reply #4 on: 15 / July / 2012, 05:15:58 »
Quote from: waterwingz on 14 / July / 2012, 11:02:08
Quote from: viwoo on 14 / July / 2012, 03:40:23
who can write a Focus shooting Script for Sx40 hs  。
 the two pics to make Bokeh in CHDK’s Script or  in PS

Here you go :

Code: [Select]
@title Bokeh
print "Bokeh"
  shoot
  set_focus 20
  sleep 500
  shoot
print "done"
end
You will have to combine the pictures on your computer - its not possible to do with a CHDK script.

Also,  your camera might need to be in "P" mode rather than "Auto".

i changed code ：sleep500  =sleep 1    and，test this script、in AV  MF mode About 85mm and edit in PS，look photo（this script‘s Interval time Seems to be useless 1 or 500 ）
« Last Edit: 15 / July / 2012, 05:32:14 by viwoo »
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Offline viwoo

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Re: who can write a Focus shooting Script for Sx40 hs
« Reply #5 on: 15 / July / 2012, 05:22:37 »
edit in PS
feel this Theory is right，but Shooting parameter and setting need to Research，to find best Combination in Portrait photography。
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Offline waterwingz

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Re: who can write a Focus shooting Script for Sx40 hs
« Reply #6 on: 15 / July / 2012, 08:42:25 »
Quote from: viwoo on 15 / July / 2012, 05:15:58
i changed code ：sleep500  =sleep 1    and，test this script、in AV  MF mode About 85mm and edit in PS，look photo（this script‘s Interval time Seems to be useless 1 or 500 ）
The sleep time is in milliseconds (one thousands of a second) so very short either way. It was there to give the camera a little time to focus before the second picture is taken.  It may not be needed ?

Quote from: viwoo on 15 / July / 2012, 05:22:37
feel this Theory is right，but Shooting parameter and setting need to Research，to find best Combination in Portrait photography。
Please post your best results when you are finished.
« Last Edit: 15 / July / 2012, 09:14:59 by waterwingz »
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Offline viwoo

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Re: who can write a Focus shooting Script for Sx40 hs
« Reply #7 on: 16 / July / 2012, 08:12:02 »
I have some test，SX40，use AV、TV、M、P mode ，AF this Script Invalid，must use MF。Focal length 24-200mm in room。Water quality is very poor English，gaga。。
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