A "tick" noise when switching phone camera lenses is usually completely normal and is caused by the mechanical movement of the lens itself, particularly the mechanism responsible for optical image stabilization (OIS) adjusting as the phone switches between different lenses; it's essentially the lens physically moving to position itself for the new focal length.
Key points about this noise:
Not a defect:
Most modern smartphones with multiple lenses have this feature, and the clicking sound is considered a normal part of the camera operation.
What's happening:
When you switch lenses, the camera mechanism needs to physically move the lens unit to activate the correct one, creating a slight clicking or ticking sound.
OIS involvement:
The OIS system within the lens also contributes to this noise, as it adjusts its position to maintain image stability when switching lenses. (Google AI)
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