This post is a local copy of the original post http://www.pixelmill.com/support/al1073/kb101733.htm.

Please visit the original post from pixelmill.com for more information.

 

Specifying size in options bar

Specifying size in options bar

Now click and drag in your replacement photograph or image using the crop tool. You’ll notice that the crop area proportions are "fixed" — you can’t change the shape of the crop area like you usually can with the crop tool. You can move the selection around to grab the perfect area of your picture.

Selecting the crop area

Selecting the crop area

Double-click in the crop area to perform the crop action. Photoshop will automatically size the selection to be the right size!

Note that if you make the selection too small, your final picture will be blurry, so make sure that you select an area that is AT LEAST as big as what you need it to be.

More information can be found from the original page below. 

Written by Shengdong Zhao

Shen is an Associate Professor in the Computer Science Department, National University of Singapore (NUS). He is the founding director of the NUS-HCI Lab, specializing in research and innovation in the area of human computer interaction.