Focus bracketing scripts sometimes stops at "shoot" command

skrylten

40

Focus bracketing scripts sometimes stops at "shoot" command

« on: 15 / December / 2012, 03:34:19 »

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I have tried several focus bracketing scripts on my S2 IS camera.
When used with the built-in flash, they randomly(?) stops at the shoot command.
Script example:
-----------------------
rem Leif Karlsson
@title Focus bracketing
@param n Max number of steps
@default n 200

sleep 2000

for s=1 to n
shoot
get_focus f
get_dof d
g=f+d*2/3
set_focus g
print g,d
if g>50000 then s=n
if d<0 then s=n
next s

end
-----------------------
It can randomly(?) stop at the first "shoot" or any other. Sometimes it works until the end.

If it stops and I finish the script with the button, and start it again, it makes 2 loops for every shoot-command.
I have "CHDK-DE_s2is-100f-1.1.0_rev_2228" installed.

Any explanation for this behaviour and a remedy ?

By the way, I have tried "sleep" in the script, but didn´t help.

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srsa_4c

4451

Re: Focus bracketing scripts sometimes stops at "shoot" command

« Reply #1 on: 15 / December / 2012, 10:05:45 »

I hope you'll receive a more detailed answer, but until that happens:
Some (earlier?) cameras have problems with the shoot command. You can try to replace it with keypress commands and delays. See the shoot, press, release, click, sleep, get_shooting commands here: http://chdk.wikia.com/wiki/CHDK_Scripting_Cross_Reference_Page

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waterwingz

12138

Re: Focus bracketing scripts sometimes stops at "shoot" command

« Reply #2 on: 15 / December / 2012, 11:39:28 »

Quote from: skrylten on 15 / December / 2012, 03:34:19

By the way, I have tried "sleep" in the script, but didn´t help.

I don't have a better answer either but where did you put the sleep command and how long was it ?

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Ported : A1200 SD940 G10 Powershot N G16

skrylten

40

Re: Focus bracketing scripts sometimes stops at "shoot" command

« Reply #3 on: 15 / December / 2012, 12:33:13 »

I tried with sleep 50 between each line in the loop and a sleep 1000 before "next s".
Had an idea about using "get_flash_ready" to check if the flash is ready, but that command give me an error "uBasis Unk stmt".

Will try to replace shoot ...

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waterwingz

12138

Re: Focus bracketing scripts sometimes stops at "shoot" command

« Reply #4 on: 15 / December / 2012, 13:19:10 »

Quote from: skrylten on 15 / December / 2012, 12:33:13

I tried with sleep 50 between each line in the loop and a sleep 1000 before "next s".

Sounds about right.

Quote

Had an idea about using "get_flash_ready" to check if the flash is ready, but that command give me an error "uBasis Unk stmt".

Hmmmm ... did a little testing and this works on my G10 :

Code: [Select]

@title Flash Ready Test 3
press "shoot_half"
    sleep 1000
    x = get_flash_ready
    if x=0 then 
      print "flash is not ready"
    else
       print "flash is ready"
    endif
release "shoot_half"
print "done"
end

If I enable / disable the flash in the Canon menus, this script reports the changes correctly.

Quote

Will try to replace shoot ...

Probably a good suggestion .. something like :

Code: [Select]

press "shoot_half"
do
    sleep 50
until get_shooting = 1
click "shoot_full_only"
release "shoot_half"

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Ported : A1200 SD940 G10 Powershot N G16

outslider

762

Re: Focus bracketing scripts sometimes stops at "shoot" command

« Reply #5 on: 15 / December / 2012, 14:02:55 »

Is there any text displayed in the console when script is interrupted? Something like "PRESS SHUTTER TO END" or something?

There's some strange problem with random script breaking which is still unsolved. Check out the thread:

http://chdk.setepontos.com/index.php?topic=8273.0

Maybe you observe the same thing...

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cout<<question
}

Compile error: poor Yorick

waterwingz

12138

Re: Focus bracketing scripts sometimes stops at "shoot" command

« Reply #6 on: 15 / December / 2012, 16:57:48 »

Quote from: outslider on 15 / December / 2012, 14:02:55

There's some strange problem with random script breaking which is still unsolved.

So far that has only been reported on the sx130.

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Ported : A1200 SD940 G10 Powershot N G16

reyalp

14004

Re: Focus bracketing scripts sometimes stops at "shoot" command

« Reply #7 on: 15 / December / 2012, 19:47:24 »

Quote from: waterwingz on 15 / December / 2012, 16:57:48

Quote from: outslider on 15 / December / 2012, 14:02:55
There's some strange problem with random script breaking which is still unsolved.
So far that has only been reported on the sx130.

Hard to be sure, but I think the same problem has been encountered on others. See the thread by mattkime I linked from in that discussion.

edit:
I very much doubt this is related to skrylten's original problem though

« Last Edit: 15 / December / 2012, 20:17:44 by reyalp »

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skrylten

40

Re: Focus bracketing scripts sometimes stops at "shoot" command

« Reply #8 on: 16 / December / 2012, 08:29:41 »

I don´t get any error messages. To me it looks like "shoot" and "get_shooting=1" doesn´t detect all the necessary conditions to trigger a shot.
The script seems to work with two added "sleep", but really don´t know why ...

---------------------------
rem Leif Karlsson
@title Focus bracketing
@param n Max number of steps
@default n 200

sleep 2000

for s=1 to n
   press "shoot_half"
   do
      sleep 50
   until get_shooting = 1
   sleep 1500
   click "shoot_full_only"
   release "shoot_half"
   get_focus f
   get_dof d
   g=f+d*2/3
   set_focus g
   sleep 1500
   print g,d
   if g>50000 then s=n
   if d<0 then s=n
next s

end
-----------------------------------

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lapser

1093

Re: Focus bracketing scripts sometimes stops at "shoot" command

« Reply #9 on: 16 / December / 2012, 10:42:38 »

I think you need to wait for get_shooting() to be false after the shot:

Code: (lua) [Select]

press("shoot_half")
repeat sleep(50) until get_shooting()
click("shoot_full") -- also does release("shoot_half")
while(get_shooting()) do sleep(50) end

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