Cellphone cameras don't have an optical zoom and nobody knows why

physics.stackexchange.com

2 pointsIvanK_net2 comments

Erm, some cellphones do have optical zoom, e.g. http://www.samsung.com/global/microsite/galaxycamera/s4zoom/

Well, the question was about optical zoom inside a cellphone-size device ("thin"). The device you mentioned, I would call that a camera with GSM module.

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