I always try to teach my students to “get it right in the camera,” and save yourself a bunch of time in post-processing. Sage advice, usually, but sometimes you just can’t. Like when you’re dealing with a fixed-focus wide angle like the iPhone. It ain’t no view camera, Charlie - got no swings and tilts. So for this 645 PRO P41 image, I had to bring it into DxO Optics Pro 9 and do a touch of perspective correction.
One thing is for sure: this iPhone thing is a helluva lot more convenient than a view camera.