I step up on the curb out of the street and take a second shot. The ship still looks big and quite close. Then I begin walking fast toward the boardwalk to get another photo quickly before the ship goes too far up river, but I need to get close enough to the water so my sight line has cleared the buildings. Watch what happens. . . .
Huh? Honest. I didn't fix anything and there are no tricks here. As soon as the ship clears the buildings relative to the viewer's sight-line, everything changes. I haven't moved to a new position, and I didn't wait for the ship to move away from us. Yeah, it's turning a bit north into the river and away from us now. It makes a little difference, but not nearly as much as it appears. It's truly an optical illusion. If I had run at full speed straight onto the boardwalk when I first saw the ship, it would be the same. I'll try to get more of these on "film." They're fun. Usually I'm in my car driving when I notice them and I can't get the photo.