Patent ID: 8704917

Claim:
A host device comprising: an arrangement of one or more optical elements; an image sensor comprising a pixel array optically coupled to the arrangement of one or more optical elements, the image sensor arranged to read a captured image from the pixel array, the image sensor supporting a discrete set of zoom factors, each of the zoom factors corresponding to dimensions of a cropped image generated by the image sensor when the image sensor is configured for that zoom factor; a processor coupled to the image sensor; a memory coupled to the processor, the memory arranged to store indications of offered digital zoom levels, each of the offered digital zoom levels corresponding to one of the zoom factors and roughly equal to the square root of the quotient resulting from dividing the area of the captured image by the area of the cropped image; and a user input component coupled to the processor to detect input indicative of one of the offered digital zoom levels, wherein at least three of the offered digital zoom levels form a set such that zoom factors corresponding to any pair of adjacent offered digital zoom levels in the set have an absolute difference that is equal to the absolute difference in zoom factors corresponding to any other pair of adjacent offered digital zoom levels in the set.