:welcome:Had an occasion the other day to try my friends mig, self adjusting welding helmet and found the following. I can see through his helmet and actually see the welding!!!! I have the same type of helmet, although a different manufacturer, and find that my glass is a lot darker than his. Both helmet settings are on #9 (lowest it can go) and the time and sensitivity are both set at maximum. Why the difference? I was under the impression that #9 shade is the lowest you can go and yet there is a difference. You can actually see the difference even when not welding. Has he the wrong glass or do I?