something like 3x
A camera or a telescope (:
Type your answer here... what is example of optical reader
A camera.
The Canon PowerShot is the best camera under $200. It has 12.1 megapixels, 4 x optical zoom, and optical image stabilization.
An optical axis is a line along which there is some degree of rotational symmetry in an optical system such as a camera lens or microscope..
Depends what your using it for
Optical and digital. With optical zoom, the camera uses lenses to magnify objects. In digital zoom, the camera's built-in software creates a magnified image.
Advanced Optical Image Stabilization uses technology within a digital camera. This technology reduces the blurriness of pictures that results from camera movement.
i suggest canon sx100 which has 8mp and 10x optical zoom
Digital zoom takes what the camera is capturing and artifically enlarges the image to give you a zoom effect. Optical zoom, however, is actual physical magnification of the picture, ensuring that your footage is as good as it can be.
Convex and concave lenses, and prisms.
Optical resolution