Sensor Size refers to the physical dimensions of a camera's imaging sensor. In simple terms, the imaging sensor is the chip that collects the light via a lens and turns that light into a photograph.
Imaging sensors come in several different sizes on DSLR cameras. The approximate dimensions are outlined below. Please note that these dimensions may vary very slightly from camera to camera:
|Sensor Size||Sensor Width||Sensor Height||Crop Factor|
|Nikon Crop Sensor||23.6mm||15.6mm||1.5x|
|Canon Crop Sensor||22.2mm||14.8mm||1.6x|