11-05-2018 11:53 AM
11-05-2018 02:09 PM
"...it sounds like a stuck aperture."
The aperture can't be stuck. It might be sticking but since it works some or most of the time it can't be stuck.
11-06-2018 04:47 AM - edited 11-06-2018 04:48 AM
Unfortunately, it is happening quite regularly. Sadly, I live on a remote island in the far north of Australia, so getting Canon to have a look at it isn't that easy.