Logitech Webcam Express What's The Best Shade Number For Welding Glass Attached To A Webcam Which Is Used To Record Images Of The Sun?

What's the best shade number for welding glass attached to a webcam which is used to record images of the Sun? - logitech webcam express

Hello, I try a webcam (Logitech QuickCam Express) to use to images of the sun all day for a project I am working on increasing. To protect the camera that will be burned by direct sunlight, I could put a good idea, a piece of welding glass in front of the camera. However, I must determine the optimal number of solder glass shade, for personal use. Who knows what number should the shadow (s) I choose? Thank you.