Got it in the mail today. At first, I thought the shade range was wrong in the advert, but it has 3 settings for range. If you push grind, it locks at 3, if you press torch, the range adjustment is 5-8, and if you press weld the range is 9-13. Seems over complicated. It would be a lot simpler if there was just the grind button to lock it at 3 and then the full range of adjustment of 5-13. I like the headband adjustment more than the HF one, but if you get it a little too snug, the temple adjustment digs into my head. The cheater only covers about half the viewing window, don't know if Jackson makes full sized cheaters for this lens or not.
Haven't welded with it yet.
Ian