How can I be vague.?I’m just saying what happened. I’m as confused as everyone
We're trying to help and to understand the situation.
I could be a bit paranoid
Fully understand. I would be, too, with such and expensive tool that has to be a reliable workhorse.
Problem was that we didn't get enough info from you about the cirumstances, if and what you've heard or saw on the camera and so on.
(as others pointed out)
So for example:
The shutter seemed to open and take a second to close. ... That’s why I’m a photographer and not an electronics technician.
If someone wasn't an experienced photog - I am sure you are experienced - and if I read the bold above my first question would be to share the exposure data.
For example this could have been a long time exposure (>1 sec) and therefore it would be normal as the shutter was open that long.
I am sure that you would have thought about this, too.
But I wouldn't need to ask if the information was like:
"
I was shooting in Tv mode with 1/250 sec and after pressing the release, I could hear the shutter open imidately and then it took more than 1 sec until i heard it closing."
That's the opposite from vague, IMO.
But my recommendation for a situation like my example in
italic would be to call Canon service because they should know better than we do.
And if you do so be prepared to tell the details, e.g. which lens(es) you used, and so on...
And - of course - please share the reply or results as we want to learn and understand, too.
Thanks in advance.