The C270 webcam has a fixed-focus lens and doesn't have an adjustment option in the Logitech Webcam Software (LWS).
To adjust image quality using LWS, see answer 360023230734.
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The C270 webcam has a fixed-focus lens and doesn't have an adjustment option in the Logitech Webcam Software (LWS).
To adjust image quality using LWS, see answer 360023230734.