#acnl-edit

If it’s an indoors shot you can just use photoshop’s Perspective tool, dragging a top corner to pinch in the image so lines that should be traveling straight up, such as side edge of the window, do so (perpendicular to the top of the picture). This might make your picture look too thin, so use the Transform tool to crunch it down a bit so your characters look reasonable.

Note that you’ll lose part of the picture when cropping it into a rectangle.If it’s an outside shot, fixing it is more complex because the whole would has a curvature which almost makes it like you’re looking through a fisheye lens. To fix this I use Adobe Lightroom’s Lens Correction settings which are used to undo fisheye in actual lenses. Here’s what the settings look like:

First I adjust the Vertical slider, which is the essentially same as using the Perspective tool in Photoshop, to again get those edges perpendicular. In this case, I’m using the left edge of the house as reference:

Next you can undo the fisheye by adjusting the Distortion slider. Moving it left adds fisheye and moving it right removes it. This time I’m going to move it all the way right, but watch the objects on the far right and left to make sure they don’t get too noticeably curved.

Finally, use the Aspect slider to stretch your image taller or wider to get the object proportions back to normal (the same as the “crunch” step in Photoshop):