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25 Jul 2018
Glad to announce of release of INDI Library v1.7.4 on 2018-07-25. A few drivers were added in this release as we continue to improve & stabilize existing drivers.
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TOPIC: Canon DSLR Off By One Images - Very Dangerous!

Canon DSLR Off By One Images - Very Dangerous! 5 months 3 weeks ago #25400

I'd recommend filing a bug report, so it doesn't get forgotten about.

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Canon DSLR Off By One Images - Very Dangerous! 5 months 3 weeks ago #25402

I must confirm what kross has said. The problem remains when you take a photo by hand.

I took a photo with Ekos, took one by hand and another one with Ekos. The photo that Ekos did show then is the one that I took by hand. Bummer.

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Canon DSLR Off By One Images - Very Dangerous! 5 months 3 weeks ago #25403

BTW, this is the same "ghost picture" issue that we have been discussing and working on right here:

indilib.org/forum/ccds-dslrs/3297-indi-gphoto-driver-v2-0.html

There are no more ghost pictures when working with Ekos alone. The problem remains when taking photos by hand though.

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Canon DSLR Off By One Images - Very Dangerous! 5 months 3 weeks ago #25450

Just out of curiosity, but why would you want to take a photo by hand when the INDI system is made for automatic workflows? I would almost assume it could throw that off (ofcourse would be nice if it didn't).

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Canon DSLR Off By One Images - Very Dangerous! 5 months 3 weeks ago #25451

If you take one manually, then delete it manually before you proceed! I guess there could be a button to discard last picture, but again if you took it manually, you can also delete it manually as well.

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Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?
Add your observatory info

Canon DSLR Off By One Images - Very Dangerous! 5 months 3 weeks ago #25453

  • kbahey
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Mainly, it is unintentional. But could also be intentional .

For example, pressing on the touch screen (Canon 650D) while adjusting focus. Or you want to record a video of the moon or Saturn, and forgot to set the dial or so.

Or maybe intentional, for example: I am at the camera, and not at the laptop, and the moon or Saturn is in the field of view, and you just want to snap the picture and not go inside to the laptop, ...etc.

Regardless, this action (intentional or not) throws INDI out of sync, and causes serious issues, as I described with plate solving and syncing to the wrong part of the sky.

So it is best if this scenario is prevented.

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Canon DSLR Off By One Images - Very Dangerous! 5 months 3 weeks ago #25454

There is no way for INDI to know if you have done this. The only solution is to implement a "download and discard" property in INDI that you need to explicitly trigger (i.e. press some button). But then again, why not delete from the camera directly?

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Jasem Mutlaq
Support INDI & Ekos; Get StellarMate Astrophotography Gadget.
How to Submit Logs when you have problems?
Add your observatory info

Canon DSLR Off By One Images - Very Dangerous! 5 months 3 weeks ago #25455

  • kbahey
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I can't test this right now, but here it is from memory, so I could be off ...

Manual exposures while connected to INDI mess up the sequence. I see the frame count on the camera's screen blinking continuously, and the camera refuses to power down when the power switch is turned off. It will display 'saving image' until the battery is pulled out.

I will try to test again on the next clear night in a week or so.

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