> you'll have to believe me when I say they are not leaning. They were just standing there posing for the photo.

I mean, if believing your words were enough to convey the message, then there'd be no point in taking the second photo and comparing them.

The point here isn't whether you're telling the truth (of course you are), it's about being able to see what's going on and get an intuitive feel for what changes and what stays the same. When I said "who's to say they're not leaning" my point wasn't to call you a liar; it was to say that that question is what immediately arises in your audience's brain, and it's completely distracting. Trust can't correct for the visual discrepancy, even if I had taken for the photo myself.