The goal of the following steps is to remove that glob of glue, so that you can turn the focus wheel (the “gear wheel” around the lens) to change the focusing distance.įigure 7. The lens is held at fixed focus by a glob of hot glue which is put on in the factory. Part B shows you how to create a small opening just large enough to be able to adjust the focus with a paper clip even with the face plate in place.Īll of the images in this article, both above and below, were taken with a C270 modified as described (although for some images I also did some minor cropping to highlight the most interesting parts). Part A below shows you how to open the case and remove the glob of glue that keeps the lens focus fixed. The narrower field of view of the C270 is better for looking just at a document, and once the focal distance is adjusted it will stay where it needs to be and won’t cause distractions. 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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