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INDI Library v2.0.6 is Released (02 Feb 2024)

Bi-monthly release with minor bug fixes and improvements

Canon DSLR fails exposure over 1 sec?

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Hi!

Tonight it happened again. Started the scope and Kstars, took a 1 sec preview, camera clicks and image downloaded. THen I try Align. Start a 30 sec exposure - no click from camera, error in Indi, and abort after 3 attempts.
Then a new 1 sec preview from Capture module. OK. Click and download of image
Back to Align. 30 sec exposure. Same thing - errors and abort after 3 attempts.

Log file attached. This time hopefully with more useful information.

Magnus
5 years 6 months ago #29639
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Hi
Did you try this ?
HTH
5 years 6 months ago #29640

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Hi!

Nope, not yet. Haven't compiled anything myself yet on the Pi... gonna try.

Magnus
5 years 6 months ago #29641

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INDI Gphoto v2.5 is out on Nightly, please try it and see if it resolves your issue.
5 years 6 months ago #29745

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I admit I don't really have a clue. However, looking at the logfile reminds me of problems that I had a few weeks ago and that have been discussed thoroughly. I don't know the EOS 1000D but what I see is the 1s exposure works and the 30s does not. When doing the former, the driver searches for a camera option that fits the 1s and finds one. In contrast, when it searches for a camera option that fits the 30s it does not find one and wants to use bulb mode instead.

[2018-09-18T20:28:49.038 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 1000D 0 : "[DEBUG] Finding optimal exposure setting for 30 seconds in shutterspeed (count=53)... "
[2018-09-18T20:28:49.038 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 1000D 0 : "[DEBUG] Using internal bulb widget:bulb "
[2018-09-18T20:28:49.038 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 1000D 0 : "[DEBUG] Setting toggle widget bulb: 1 "
[2018-09-18T20:28:49.039 CEST DEBG ][ org.kde.kstars.indi] - Canon DSLR EOS 1000D 0 : "[DEBUG] Failed to set new configuration value (GP result: -1) "

The message "Failed to set new configuration value" indicates to me the option "bulb" has not successfully been activated.

Now, the problem with my camera was that bulb had its own dial position whereas with Jasem's cam "bulb" was just one value within "manual" mode. If the 1000D has a separate "bulb" mode like the 5D has, you could try this for a 30s exposure.

Should that be complete nonsense, please ignore it...
Last edit: 5 years 6 months ago by Alfred.
5 years 6 months ago #29776

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Hi!

There is a Manual position and then I turn the wheel until Bulb is choosen. However, it seems that, as you said, after setting 1 sec i fails to set Bulb. I guess it is solved now with the new driver version, will test as soon as possible, probably tomorrow.

Magnus
5 years 6 months ago #29786

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Hi
As this fix works, why don't we simplify the code and use bulb for everything? Is there an advantage of using different code if a time is set in camera?
Last edit: 5 years 6 months ago by alacant.
5 years 6 months ago #29804

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It's there in the code now and turned on by default. Reason is the camera timer is always going to be more accurate than software timer so in my camera if I turn that option off and take 10 seconds exposures, it's going to use camera timer and the not the driver timer so it's inherently more accurate.

The v2.5 of the driver (in nightly) have this fix and we'll roll it out to stable soon.
5 years 6 months ago #29805

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So you ran the test after choosing manual mode (dial) and bulb (wheel)?

Out of curiosity: What happens if you take the 30s photo first, after turning on the camera (manual/bulb activated)? Did you ever see a 30s exposure fail when no other foto had been taken before?
Last edit: 5 years 6 months ago by Alfred.
5 years 6 months ago #29807

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Hi!

Yes, choosing manual, then bulb with the wheel. It seems like there is no problem if I don't do a 1 sec exposure. THat is, start it, then for instance 15 sec alignment and so on, and then capture. It is the focus that is tricky, there I typically have around 1 sec exposure. However, it seems intermittent so I have not really been able to see any real pattern except that if I start with a 1 sec preview, it is high risk for problems.

Magnus
5 years 6 months ago #29808

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REgarding the fix: should there now be an option to choose "always bulb" or something? I cannot find it. I'm using indi-gphoto 2.5~201809241257~ubuntu16.04.1

So far, it seems to work at least.

Magnus
5 years 6 months ago #29809

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It should be there now. It was implemented but not exposed to the user. It is now.
5 years 6 months ago #29888

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