A method, of selectively reading less than all information from an image sensor for which member-pixels of a subset of the entire set of pixels are individually addressable, may include: sampling information from a targeted member-pixel of the subset without having to read information from the entire set of pixels; and adaptively reading information from another one or more but fewer than all member pixels of the entire set based upon the sampling information without having to read all pixels on the image sensor. A related digital camera may include features similar to elements of the method.