Cropping images is by far one of the most common, every day uses for Photoshop. It’s so common that Photoshop comes with a tool designed specifically for cropping photos, conveniently named the Crop Tool. One of the great things about the Crop Tool is that you can easily crop your photos to common photo sizes like 4×6, 5×7 or 8×10 simply by entering the width and height values into the Options Bar before dragging out your cropping border, or by selecting a preset crop size from the Preset picker.
That may be great, but what if you don’t want to change the aspect ratio of the photo? What if you want to crop the image while keeping the width-to-height ratio the same as the original? And what if you’re not sure what the original aspect ratio actually is? You could open the Image Size dialog box to find out the width and height of the image and then do the math, but there’s an even easier way thanks to a rarely used but very useful command in Photoshop called Transform Selection, which is what we’re going to be looking at in this tutorial.