I've been practicing the fundamentals tonight. After working on linear perspective, I came across a photograph on Wikipedia that I wanted to use as a study.
I began extending parallel lines to vanishing points and estimated a horizon line. Keeping in mind that all parallel lines have the same vanishing point, I was surprised to see that different structures, though likely to have the same orientation, had clearly different vanishing points. I'm not a photography guy, though I wondered if the appearance of a very wide angle field of view had something to do with this. Also, the photo appears to be cropped together from two separate photographs, or perhaps pages of a book.
I've looked through photography websites and I've only learned that vertical lines converge sharply, when viewed down field, in a wide angle shot. I've also attempted the same process with other wide angle photos and found similar, though not as extreme, results.
So what's the take away lesson from all this? This doesn't reconcile well with what I've been practicing and understand about linear perspective. Did I make a fundamental mistake in drawing these parallel lines or setting up vanishing points? Or am I to understand there is something different in this view, something creating an exception to the rules?