Re: [mediacapture-image] Include malicious sites and surveillance cameras in the PTZ explainer (#222)

> Pan and Tilt works within that **bound field of view** of that camera , **most** cameras and i think **all** webcams for personal use / video conf, pan and tilt are **NOT** mechanical, in very small case, zoom **can** be at most mechanical.

But you cannot assume that is the case in the future and that this API will not apply to such cameras. Also I have been to many meeting rooms there the professional cameras could definitely pan and tilt mechanically. 

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