The Shape of Digital Imaging: Aspect Ratio
Now that you have an understanding of the image resolution and how to calculate the number of pixels that make up your raster image, it is time to consider the shape (rectangular or square) of your digital imagery. Your digital imagery’s shape, known in the industry as its “aspect ratio,” is more important than you might think, especially when you’re changing it using image scaling (known as resampling) or image cropping.
The aspect ratio should not be manipulated or changed in any way, in order to prevent image distortion. Developing full knowledge about the aspect ratio will allow you to ...