Or …your mouse
Many times when we shoot architecture, if we don’t have our camera perfectly level to the building, either shooting up on it or possibly down on it, we will get some geometric distortions or ”keystoning” effects to our image. This at its extreme may look like buildings leaning in on themselves or each other. Or it could just be an element of the building like a door or window that don’t appear square.
Possible fixes are to; well shoot with our camera level – which of course isn’t always possible. Or, we could shoot with a Tilt-Shift Lens( a specialized lens that the barrel twist and turns so the camera stays level but the lens itself points up at a building) But not many people have these expensive lenses in their kit (ha-ha I love to sound British and say “Kit” instead of Bag)
So the other choice is to use software instead. In this exercise I will show how top do it in Photoshop and also Lightroom/Adobe Camera RAW.