Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

thierrywalt

2

Re: Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

« Reply #50 on: 13 / April / 2011, 16:35:13 »

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I really need these features!! I have an A570IS, already with the latest version of CHDK. Can someone help me getting these on my camera? Is there a file, plugin or anything like that? I have very good knowledge of computers in general, but not specifically about CHDK. What do I need to do to be able to control ISO and aperture in my camera?

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fudgey

1705
a570is

Re: Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

« Reply #51 on: 15 / April / 2011, 12:10:26 »

Quote from: thierrywalt on 13 / April / 2011, 16:35:13

I really need these features!! I have an A570IS, already with the latest version of CHDK. Can someone help me getting these on my camera? Is there a file, plugin or anything like that? I have very good knowledge of computers in general, but not specifically about CHDK. What do I need to do to be able to control ISO and aperture in my camera?

Compile CHDK with native calls enabled and run the script from my earlier post here http://chdk.setepontos.com/index.php?topic=5295.msg54097#msg54097

But it's not stable, meaning you should expect the camera to crash every now and then. During video record, that will probably mean losing the entire recording.

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rolytng

2

Re: Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

« Reply #52 on: 04 / May / 2011, 14:08:12 »

Quote from: Stimpy on 12 / February / 2011, 19:59:57

Please see the section "Completed and Working Scripts"

Video exposure control, modified to work on Digic 4 camera's
If you download the script and substitute with your memory locations it should work fine.

Hi!
I have a sx130 is. Please tell me how can I upgrade my chdk with manual video control. Unfortunatelly I'm not a big brain in programming but I would to try it. I want to reduce ccd's smear using slower shutter and an nd filter, but I have no chance using auto mode.
Thanks
Roland

« Last Edit: 04 / May / 2011, 14:10:13 by rolytng »

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funnel

349

Re: Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

« Reply #53 on: 08 / June / 2011, 15:30:11 »

Great. Works for SX220. I had to comment out the lines autoexp() and manualexp() because ExpCtrlTool_StartContiAE and ExpCtrlTool_StopContiAE aren't needed and caused the camera to crash. On this camera the exposure can be set manually before starting the recording and this disables the continuous AE.

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vit40

276

Re: Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

« Reply #54 on: 09 / June / 2011, 02:20:01 »

Any way to disable continuous AE on other cameras (like A650, A620) the same way as on SX220 ? Current implementation is not useful for me, because zooming unlocks the exposure

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funnel

349

Re: Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

« Reply #55 on: 13 / June / 2011, 04:04:56 »

I did some modifications on the original script. Used PT_DoAELock and PT_UnlockAE to enable and disable AE. I don't know if it will work on other cameras. Works fine on sx220.

The differences are:

Code: [Select]

--required for PT_DoAELock and PT_UnlockAE
if (call_event_proc("SS.Create") == -1) then 
    error("SystemEventInit failed")
end

Code: [Select]

-- go to manual exposure mode
function manualexp()
	ret=call_event_proc("PT_DoAELock")
end
function autoexp()
	ret=call_event_proc("PT_UnlockAE") 
end

Code: [Select]

       elseif is_pressed("set") then
            print("recording")
            --click "shoot_full"
	    post_levent_to_ui("PressMovieButton")
. 
.
.

Videxp.lua (8.52 kB - downloaded 345 times.)

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philmoz

3450

Re: Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

« Reply #56 on: 30 / July / 2011, 20:01:34 »

Based on this script, I've implemented a touch screen version for the IXUS 310 HS.
(Being able to create a custom U/I opens up some interesting possibilities).

Still needs some work - the camera will crash if you change settings too quickly.

Not sure how practical this is for the IXUS 310, being such a small camera and with a 10 minute video clip limit; but it was fun to play around with.

Phil.

IMG_4245s.jpg (110.33 kB, 640x385 - viewed 457 times.)
Model:Canon PowerShot G12 Software Used:Adobe Photoshop CS5 Windows Exposure Time:1/30 seconds F Number:F/2.8 ISO Speed:80 Date Taken:2011:07:31 09:56:24 Metering Mode:Center Weighted Average Flash Mode:Flash did not fire; compulsory flash mode Focal Length:7.407 mm Color Space:sRGB

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CHDK ports:
sx30is (1.00c, 1.00h, 1.00l, 1.00n & 1.00p)
g12 (1.00c, 1.00e, 1.00f & 1.00g)
sx130is (1.01d & 1.01f)
ixus310hs (1.00a & 1.01a)
sx40hs (1.00d, 1.00g & 1.00i)
g1x (1.00e, 1.00f & 1.00g)
g5x (1.00c, 1.01a, 1.01b)
g7x2 (1.01a, 1.01b, 1.10b)

mojo43

24

Re: Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

« Reply #57 on: 12 / March / 2012, 19:07:57 »

Damn, just checked this script out on my Elph 300 HS and it works until the record button is pressed. I replaced the values from here http://trac.assembla.com/chdkde/changeset/880

Any ideas on what I should be doing differently? Should I have iso manually set in CHDK before I start the script? It seems like I have tried all combinations but the continuous AE won't lock!

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alinvfx

4

Re: Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

« Reply #58 on: 27 / March / 2012, 23:31:53 »

Any news about exposure lock during video ?

i am really anxious on buying this camera and my retailer is going out of stock .

Can someone tell me if exposure lock for video is just a matter of time or there is the posiblity that exposure lock will be imposible for this model ?

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waterwingz

12139

Re: Video Manual Control: ISO, APERTURE & SHUTTER SPEED CONTROL, PLEASE!!!!

« Reply #59 on: 28 / March / 2012, 08:20:52 »

Quote from: alinvfx on 27 / March / 2012, 23:31:53

i am really anxious on buying this camera and my retailer is going out of stock .

What camera ?

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Ported : A1200 SD940 G10 Powershot N G16