Do vented lenses really make that much of a difference wheat comes to lense fogging? I’m getting tired of my half jackets going opaque in humid/sweaty conditions.
I use jawbones in a very arid climate and they do actually make quite a difference. Sitting in the back of a van in full kit, with 12 other dudes in full kit, for four hours on a hot summer day… you won’t see much difference.
When you’re moving and circulating the air the difference is quite noticeable.
I always noticed a diff in my M frames esp if you were moving at all