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Manually Focusable Logitech C270
Getting started with Logitech® HDWebcam C270
Printed It: Logitech C270 Conversion | Hackaday
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Logitech C270 720P HD Laptop Webcam with Built-in Mic 30fps Video Calling Camera Fixed Focus for Windows Mac Android - AliExpress
Focus Wheel for Logitech C270 Webcam by Zq8blazer - Thingiverse