If you are new to camera sensors, here’s our easy guide to understanding your sensor options.
Full frame (36mm by 24mm) which is the largest sensor size and is the same size as a frame of 35mm film. Full-frame sensors are almost twice as big as APS-C sensors. Full frame sensors have no crop factor and when you look through the viewfinder the final image you make will be the same size as what you originally viewed. The Canon EOS 5D Mark III, which is a professional DSLR, has a Full Frame sensor.
APS-H (28.7mm by 19mm) is a popular sensor type for interchangeable-lens and higher-quality fixed-lens cameras. It is common on DSLRs. The Canon 1D Mark IV and Canon 1D Mark III which are professional DSLR’s have an APS-H sensor.
APS-C (23.6mm by 15.8mm) are common on most DSLR cameras and are also found on mirrorless cameras. The APS-C sensor combined with a nice mega pixel count and ISO range can provide you with excellent picture quality rivaling a professional DSLR. The Canon 7d has an APS-C sensor.
Micro Four Thirds & Four Thirds (17.3mm by 13mm) is roughly one fourth of the size of a full-frame sensor. Both Olympus and Panasonic have Micro Four Thirds mirrorless cameras. The crop factor is 2x the full frame.