General Quality of the video recorder?

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http://androidforums.com – I need a phone that has clear video recording. I need things like words/numbers/anything that is written on a board with marker or a chalk board to be clearly visible when I watch the video wether I recorded from close, mid or far away. Does the quality of the quality of the Galaxy Nexus enough? Also, can you zoom in and out while recording? even if it's from an app. Please and thanks. (General)