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How is image formation in the eye different from that in a photographic camera

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in Digital Image Processing by (701k points)
How is image formation in the eye different from that in a photographic camera

(a) No difference

(b) Variable focal length

(c) Varying distance between lens and imaging plane

(d) Fixed focal length

This question was addressed to me during an interview.

This intriguing question comes from Elements of Visual Perception topic in portion Image Restoration and Reconstruction of Digital Image Processing

1 Answer

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Correct answer is (b) Variable focal length

The explanation is: Fibers in ciliary body vary shape of the lens thereby varying its focal length.

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