Photographer Mike Collins created this simple video that gives you a visual look at the difference between full frame sensors and crop frame sensors when using the same lens. The video uses a Canon 5D Mark II for the full frame shots, and a Canon 7D (1.6x crop factor) for the crop shots.
This is a short test with the tripod in the same spot switching between prime lenses to show how the crop affects the 7D. The subject, ace stand in Chris Clement, was roughly five feet from the camera. This isn’t meant to be an aesthetic test to show the difference in image quality between the two cameras. It’s a down and dirty field guide for myself and the other shooters we work with so we can quickly figure what lens we want to use on each camera.
We go from 20mm all the way to 100mm with a Lensbaby composer thrown in at the very end.
You might be surprised at how different the lens are, especially if you’ve never used both full frame and crop frame before.