Ah. Yes, I was indeed flashing myself as well.

Just checking that you aren't catching yourself in the effect are you? That will reduce your vision range which in turn will make the game zoom in.

Interesting Mod. I like it. Its a bit strange that it zooms in once you throw it. Other than that, I love the effect size of the tactic. It's essentially a smoke grenade with your vision not being obstructed.