Idan Shechter, the guy behind Camera Size, has launched a new website for photographers who understand sizes better through visual comparisons than through specs and figures. Sensor Size is a website that offers quick visual comparisons of sensors found in popular digital cameras. Select the cameras you want to check out from a couple of drop-down menus, and the sensors are displayed in relative sizes next to each other. You can also stack the images or display them in a 3D overlay for a better view.
A full frame sensor next to an APS-C crop factor sensor:
Canon’s crop factor sensor next to the sensor found in its popular compact camera, the S100:
Sensor Size: Image Sensor Relative Size Comparison Tool [Sensor Size]