Photoshop and architectural photography go hand in hand.
Here’s an example of a recent shot of living room. Because of the level of the camera and the height of the ceilings I needed to tilt the camera up, resulting in a keystone effect that give the appearance that the walls are leaning in. Although many people don’t register this immediately, subconsciously our brain knows that walls are supposed to be vetical and that something is off. This perspective distortion can be corrected in a couple ways. The first is to use a tilt-shift lens like Canon’s new 17mm ts-e ($2300). A tilt shift-lens allows you to correct the perspective by moving the axis of the lens. This lens is not only expensive but has very limited uses. The alternative is to correct the perspective using Photoshop or a similar editing program.
Here’s the result after some work in Photoshop. Not only have we corrected the keystone effect but we have brought back details in the windows cropped out the window and walls that were in the foreground of the original image. The wall and window didn’t add to the image and were a bit distracting. By removing them we have brought the viewer into the warmth and luxury of this great living room and it’s spectacular views.