Sensor Size

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.

Digital Camera Sensor Closeup
The exposed image sensor of a mirrorless camera with it's lens removed

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:

35mm Cameras

Sensor SizeSensor WidthSensor HeightCrop Factor
Full Frame36mm24mm1
Nikon Crop Sensor23.6mm15.6mm1.5x
Canon Crop Sensor22.2mm14.8mm1.6x
Micro Four-Thirds17.3mm13mm2.0x