The classification of the camera. Digital SLR is the most advanced camera type.
The amount of detail that the camera can capture is called the resolution, and is measured in mega pixels (MP). The more mega pixels a camera has, the more details it can capture and the larger pictures can be without becoming blurry.
Without Image Stabilizer
ISO 100, ISO 1600, ISO 200, ISO 3200, ISO 400, ISO 50, ISO 800, Auto
Max image resolution
Still image format
LCD screen size
Red eye reduction
The number of times the image can be enlarged with the optics of the camera. The optical zoom 'moves' you closer to the subject without sacrificing quality. The higher the optical zoom, the farther away you can be to take a photo and still get a clear, close-up image.