After more than seven years of use, both of my Logitech C920 HD Pro cameras are going blind with cataracts...
Well, not really cataracts; however, the internal lens in both cameras have apparently been damaged by the constant UV rays from the sun here in the high desert of Nevada. I have attached an image of what the camera looks like. See the attached image and you'll notice that the lens is not crystal clear as it should be. In fact, it has a clouded, or milky, look to it. I've disassembled the camera and removed the lens but it's obvious there is nothing I can do with it. Logitech support says they don't sell parts for any of their cameras and for me to look to third-party repair shops to fix it. I've contacted a couple and none of them will do any repairs because they say they can't get parts for them either.
So, unless I can find a source of a new lens, I am out of luck and will have to purchase a new camera.
BTW, both of these cameras have the Carl Zeiss Tessar glass lenses in them. I don't understand how glass can be affected by UV rays.
I had to stop feeding live images to my website due to the poor quality of the images I was getting.