![]() The more expensive Logitech C910 and C920 have an auto-focus feature which does too much back-and-forth focusing when used as a document camera, and it also has a wider field of view. ![]() One result of this modification is that the C270 becomes a better choice to use for a document camera. It is even possible to modify the case to create a small opening to allow you to change the focus manually using a paper clip. The lens inside the device can be focused for different distances, if you are willing to open up the case and remove a glob of glue. The Logitech C270 is an inexpensive all-purpose webcam with a fixed focus which is set at the factory to be used for face-to-face video meetings with the camera placed on top of your computer monitor or above a laptop screen. ![]() Instructions for modifying a Logitech C270 so that one can adjust the focus manually. ![]()
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