Canon PowerShot A1200

photongraph

12

Re: Canon PowerShot A1200

« Reply #40 on: 02 / September / 2012, 12:29:33 »

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Wow that was quick! I installed it and it loaded fine! Now time to play with it! Will report back. Thank you so much waterwings! Amazing!

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waterwingz

12140

Re: Canon PowerShot A1200

« Reply #41 on: 02 / September / 2012, 22:38:06 »

So it looks like most things work. Nice !

Has anyone played with motion detection ?

http://chdk.wikia.com/wiki/Motion_Detection

and more specifically, how fast is the A1200 with the current code ?

http://chdk.wikia.com/wiki/Software#Motion_Detection

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Ported : A1200 SD940 G10 Powershot N G16

photongraph

12

Re: Canon PowerShot A1200

« Reply #42 on: 03 / September / 2012, 13:27:58 »

I tried motion detection it worked but i cant set it fast enough to catch my hand as i wave it. Even when i set shutter, ISO, and focus manually. Too slow or am i missing something,as I've had CHDK to play with for only a few hours so still learning it.

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waterwingz

12140

Re: Canon PowerShot A1200

« Reply #43 on: 03 / September / 2012, 14:59:45 »

Quote from: photongraph on 03 / September / 2012, 13:27:58

I tried motion detection it worked but i cant set it fast enough to catch my hand as i wave it. Even when i set shutter, ISO, and focus manually. Too slow or am i missing something,as I've had CHDK to play with for only a few hours so still learning it.

If it doesn't catch your hand, what was it able to catch ?

Also, you don't mention what script you used ? The simple default one that comes with the CHDK distribution ?

There is a sensitivity adjustment available for the call the script makes to the Motion Detect code. Some details are here :
http://chdk.wikia.com/wiki/Motion_Detection#Key_Concepts
You have to play with it a bit - on other cameras I've found that how it works (and the best setting) is affected somewhat by things like ambient lighting conditions. In the simple scripts included with CHDK its parameter "f" - you can either adjust it in the script menu or edit the script source file.

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Ported : A1200 SD940 G10 Powershot N G16

photongraph

12

Re: Canon PowerShot A1200

« Reply #44 on: 04 / September / 2012, 00:26:28 »

It was able to catch my hand if i moved it slowly enough.

Yes i used the one that come with the CHDK installation MOTION.BAS.

The script shoot delay likes to be set at-least 1s or it keeps shooting after the first detection even if there is no movement. Thanks for the link, ill keep on playing with it. The lighting in my room when i tried it was kind of low a single 18w CFL, will try it in sunlight later.

I'm also looking at the FPS override in movie mode for short interval time-lapses.

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photongraph

12

Re: Canon PowerShot A1200

« Reply #45 on: 04 / September / 2012, 02:51:17 »

Can the 10min limit on video be overridden?

Pressing on/off button to power on the cam goes to play mode is this normal?

I cant seem to make Override Subject Distance to work. I set the values on the menu then exit alt mode, half press and it still auto focuses.

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waterwingz

12140

Re: Canon PowerShot A1200

« Reply #46 on: 04 / September / 2012, 03:43:24 »

Quote from: photongraph on 04 / September / 2012, 02:51:17

Can the 10min limit on video be overridden?

No. It might be technically possible to dig deep in the camera''s code and find a way but so far nobody has really been able to do it in a generic way that all cameras can use.

Quote

Pressing on/off button to power on the cam goes to play mode is this normal?

Yes, its normal. Press and hold the On/Off for about 1 second will start the camera in shooting mode.

Quote

I cant seem to make Override Subject Distance to work. I set the values on the menu then exit alt mode, half press and it still auto focuses.

Take a look at this : http://chdk.setepontos.com/index.php?topic=6318.msg90196#msg90196

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Ported : A1200 SD940 G10 Powershot N G16

dxtr

2

Re: Canon PowerShot A1200

« Reply #47 on: 04 / September / 2012, 09:16:43 »

Quote from: waterwingz on 04 / September / 2012, 03:43:24

Quote
Pressing on/off button to power on the cam goes to play mode is this normal?
Yes, its normal. Press and hold the On/Off for about 1 second will start the camera in shooting mode.

Wouldn't the other way make more sense?

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waterwingz

12140

Re: Canon PowerShot A1200

« Reply #48 on: 04 / September / 2012, 10:11:58 »

Quote from: dxtr on 04 / September / 2012, 09:16:43

Wouldn't the other way make more sense?

It might make more sense but we don't know how to do that safely.

When CHDK starts, it does not know what button was used to activate the camera (i.e. the playback button or the On/Off button) unless you are still holding that button down. So the choice is :
1) start the camera in playback mode unless the On/Off button is held down
2) start the camera in shooting mode unless the On/Off button is held down

If you use the second choice, the camera will start in shooting mode when you press the playback button or the On/Off switch. This will extend the lens - which might be not what you want (especially if the playback button is accidentally activated while the camera is in a pocket or purse).

This has been debated many times over the years and the consensis was to make it work the way you now see it (option 1) above. That way the lens never extends due to a short accidental press of either switch.

You are of course free to compile your own version and change the action if you really want that feature.

« Last Edit: 04 / September / 2012, 10:13:31 by waterwingz »

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Ported : A1200 SD940 G10 Powershot N G16

deathberry01

4

Re: Canon PowerShot A1200

« Reply #49 on: 04 / September / 2012, 23:49:14 »

My A1200 works great.
I can take better IR photography with RAW file

Thank you for all of you. especially waterwingz and all developers

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