A digital camera has an 8.3-megapixel CCD array with the pixels evenly spaced over a rectangular region, 7.2 mm Ă—5.3 mm. The camera has a lens 2.0 cm in diameter with a focal length of 3.5 cm. (a) What is the resolution limit due to pixel size? (b) What is the approximate resolution limit due to aperture size? (c) If an object 1.5 m high is 200 m away, how many pixels high will the image be? (d) What is the maximum distance from the camera that this page could be photographed in order to read this paragraph from the digital photo? (e) In a movie theater, the screen is 4.0 m wide and 2.2 m tall. How far back from the screen would one have to sit to capture an image of the whole screen with this camera?
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