Originally posted by DogLover Always been a little curious about this. Do you lose some width in the de-fishing process?
Sort of. Imagine drawing crosshairs through the central point of your image. You won't lose anything from the image where those lines run, directly on the vertical or horizontal axis. The further you move towards the corners, the more of the image will be stretched out of the frame.
Let me see if I can offer an example. You start with something like this:
Then the software distorts it to something like this:
Then it crops down to this:
PTLens also has some limited ability to rotate and correct the horizontal or vertical perspective, if you didn't get it spot-on. That's why this image looks as though it was cropped a little more on some sides than on others.