Intervalometer on a SD1100

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Offline bobg

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Re: Intervalometer on a SD1100
« Reply #10 on: 12 / August / 2009, 23:31:57 »
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I mean... I can get it up to 15 seconds using the night setting for exposure in the native firmware, but I can't get it any higher than that, which makes me think maybe I misunderstand how to run a script. Any tips? Thanks!

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Offline fe50

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Re: Intervalometer on a SD1100
« Reply #11 on: 13 / August / 2009, 02:15:17 »
I mean... I can get it up to 15 seconds using the night setting for exposure in the native firmware, but I can't get it any higher than that, which makes me think maybe I misunderstand how to run a script. Any tips? Thanks!

Your settings are ok (23s x factor 1), you should see the CHDK override value on the LCD: Tv:23.0000
Don't forget: when you have "Clear override [email protected]" enabled [.], the overrides will be disabled automatically when you power off the camera...

And also remember - the Canon OSD don't show the CHDK override, although you have 23s CHDK-overwite, the Canon-OSD still shows 15s...
Quote
The Canon OSD don't know anything about the CHDK overrides, it only shows values from the internal Canon list,
so on exposure times beyond the Canon limit of 15s the Canon OSD will always show "15s"...

A shot with the settings from above takes ~46 seconds: 23s exposure + 23s dark-frame...you should also see the difference in the image...

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Offline bobg

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Re: Intervalometer on a SD1100
« Reply #12 on: 13 / August / 2009, 07:03:28 »
Thanks again for the tips! Okay, I can see the Tv:23.0000. Just to make sure I can tell whether the shutter's open for 15 secs (the maximum for night setting on the native firmware) or longer, I tried a 45 secs exposure. I see the Tv:45.0000, but it's still staying open for only 15 secs. I have to go to manual/night setting on the native firmware to get the 15 secs, otherwise it stays open for just a fraction of a second. There must be something basic I'm missing... any tips?

Thanks for your patience!




I mean... I can get it up to 15 seconds using the night setting for exposure in the native firmware, but I can't get it any higher than that, which makes me think maybe I misunderstand how to run a script. Any tips? Thanks!

Your settings are ok (23s x factor 1), you should see the CHDK override value on the LCD: Tv:23.0000
Don't forget: when you have "Clear override [email protected]" enabled [.], the overrides will be disabled automatically when you power off the camera...

And also remember - the Canon OSD don't show the CHDK override, although you have 23s CHDK-overwite, the Canon-OSD still shows 15s...
Quote
The Canon OSD don't know anything about the CHDK overrides, it only shows values from the internal Canon list,
so on exposure times beyond the Canon limit of 15s the Canon OSD will always show "15s"...

A shot with the settings from above takes ~46 seconds: 23s exposure + 23s dark-frame...you should also see the difference in the image...

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Offline fe50

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Re: Intervalometer on a SD1100
« Reply #13 on: 13 / August / 2009, 07:17:20 »
Thanks again for the tips! Okay, I can see the Tv:23.0000. Just to make sure I can tell whether the shutter's open for 15 secs (the maximum for night setting on the native firmware) or longer, I tried a 45 secs exposure. I see the Tv:45.0000, but it's still staying open for only 15 secs. I have to go to manual/night setting on the native firmware to get the 15 secs, otherwise it stays open for just a fraction of a second. There must be something basic I'm missing... any tips?
It looks like you've done it all the right way, maybe there's something broken in the SD1100's current CHDK version.

@fbonomi:
Can you reproduce this on your SD1100 (don't know whether you also have fw 1.01A) ?
(maybe there's something broken since changeset #728)


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Offline bobg

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Re: Intervalometer on a SD1100
« Reply #14 on: 13 / August / 2009, 22:11:23 »
@fbonomi Thanks! What folder do I put that file into? CHDK/scripts? I tried that, and saw the menu options for the intervalometer, but then my screen goes black when I try to start it, and it takes just one photo and goes black again. I'm confused... I feel like there must be something obvious I'm missing about how to run CHDK scripts, or a setting that needs to be unset...





The SD1100 is a bit tricky for aerial photography, as it cannot be set into a "shutter priority" or "aperture priority" mode to ensure very short shutter times, and thus tends to give blurry photos in such a shaky environment

I developed some code to force the camera to shoot with very short shutter times for my balloon project, and bzfrank adapted it into a simple intervalometer here:
http://chdk.setepontos.com/index.php?topic=3509.0

you can find the script here:
http://www.wizards.de/~frank/FTVIntrv.lua
(save it as a .lua file in your card)

To use this script, you will have to force to camera to keep the ND filter out of the way. To do this, in the main CHDK menu go under "Extra photo operations" and leave all the settings to their defaults, apart:
- ND filter state: Out (do not confuse it with "Off"!!)
- Clear override values on sta: Unchecked (do not confuse the menu item with the "Clear on start" that you find under "Zoom Override". This is one of the last items in the menu

IMPORTANT NOTE: with this setting, if you use your camera normally you will have over-exposed photos. To use the camera normally you will have to set the ND filter back to "Off"

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Offline bobg

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Re: Intervalometer on a SD1100
« Reply #15 on: 13 / August / 2009, 23:25:40 »
I've gotten CHDK's long exposure on my SD1100 work a few times now, but then when I try again, it's not working, somehow. I'm sure I'm doing something silly, so I tried putting in a freshly charged battery, resetting settings in the Canon firmware and the CHDK firmware, but then it's not working when I set the settings as here...
http://img151.imageshack.us/img151/3444/settingsh.jpg
... even though I can see the Tv:23.0000 on the LCD.

Hmm... any tips? Does the camera have to be in manual mode, or not, or out of continuous mode? I keep playing around with these trying to get the right combination.

I appreciate all the help!


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Offline fbonomi

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Re: Intervalometer on a SD1100
« Reply #16 on: 14 / August / 2009, 01:32:22 »
@fbonomi Thanks! What folder do I put that file into? CHDK/scripts? I tried that, and saw the menu options for the intervalometer, but then my screen goes black when I try to start it, and it takes just one photo and goes black again. I'm confused... I feel like there must be something obvious I'm missing about how to run CHDK scripts, or a setting that needs to be unset...

mumble....

Are you saying it behaves erratically?

in this case I suspect the problem is with the firmware version, i.e. you selected a CHDK for a formware other than yours.

check that the version that appears on the CHDL logo when it starts (something like 1.01A) matches what you get when yo do the ver.req trick described here:
http://chdk.wikia.com/wiki/SD1100IS

best luck!

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Offline bobg

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Re: Intervalometer on a SD1100
« Reply #17 on: 14 / August / 2009, 07:27:41 »
Yes, I did that, and they're both 1.01A.

Any other tips? Do the Canon settings matter when I'm running a a script (i.e. manual vs auto vs night setting, continuous vs not, etc)? Because it started and stopped working when I was trying changing those.

I loaded the software using a Mac, just in case that's relevant.

Thanks again for all the help. Any other advice would be appreciated...


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Offline bobg

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Re: Intervalometer on a SD1100
« Reply #18 on: 14 / August / 2009, 23:56:54 »
Okay, I've tried just about everything I can think of, so I think I'm giving up on using CHDK for my SD1100 IS, unless someone has an idea. Bummer. I'll keep checking back here though in case someone has a suggestion. I'd certainly try anything someone suggests. Thanks!




Thanks again for the tips! Okay, I can see the Tv:23.0000. Just to make sure I can tell whether the shutter's open for 15 secs (the maximum for night setting on the native firmware) or longer, I tried a 45 secs exposure. I see the Tv:45.0000, but it's still staying open for only 15 secs. I have to go to manual/night setting on the native firmware to get the 15 secs, otherwise it stays open for just a fraction of a second. There must be something basic I'm missing... any tips?
It looks like you've done it all the right way, maybe there's something broken in the SD1100's current CHDK version.

@fbonomi:
Can you reproduce this on your SD1100 (don't know whether you also have fw 1.01A) ?
(maybe there's something broken since changeset #728)

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Offline bobg

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Re: Intervalometer on a SD1100
« Reply #19 on: 16 / August / 2009, 18:47:11 »
I loaded Frank's intervalometer, and it looks like this on my camera:
http://img233.imageshack.us/img233/5646/ftvintrv.jpg

(sorry about the fuzzy photo... it's taken from my webcam)

Unfortunately, it's not working for me. I click and just get one photo. Sorry to be such a thorn again... I'd love to get this working, as I have a kite ready for kite aerial photography.

I was having trouble before doing long exposures using CHDK, and found I had to press the shutter button halfway, or maybe hold it halfway, for it to work. Now it works great! I'm very happy. I still have to press the button like that to get it to work. (By the way, I also did an autobuild instead of manual build (from my mac) and that might have made a difference too).

Does anyone have any advice about getting the intervalometer to work? If so, I'd really appreciate it! I'll keep checking back here.

Thanks!

 

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