I have recently been shooting with the Canon G7X Mark II, as it's more portable and less "in your face" than my 5DIII. I've noticed that in all of my images, the corners are a solid black colour, and it isn't vignetting. I've been shooting for years and I know what a vignette looks like :') Regardless, it's a pain to edit in post and I don't want to crop my images down to rid them of these black corners. I was wondering if it's the IS that's causing it or whether there's a technical fault with the camera itself. I'll provide sample images if I can, this is my first time on this forum site. Please let me know if any of you have had a similar issue and/or how to go about resolving it. Any and all help is greatly appreciated!