All modern welding helmets have permanent uv and ir filters. The darkening ability doesn't affect the safety of these helmets. If you're welding at max amperage and the setting is on minimum dark like 4 you aren't going to damage your eyes because the filters are protecting you. You MIGHT have some flash fatigue but it's doubtful.
This is a common misconception. The darkening feature is separate from the safety protection.
Auto darkening welding helmets are inherently better because of other reasons such as always having the lenses shading you instead of accidental arc strike (especially in stick welding) and having the helmet up and if you're welding around other welders you'll spend less time avoiding their arcs.
They also can help your accuracy while you practice and reduced fatigue and neck-flip soreness.
Also you can safely watch the puddle cool while still bright instead of flipping up to a white hot puddle that you'll stare at.
This is a common misconception. The darkening feature is separate from the safety protection.
Auto darkening welding helmets are inherently better because of other reasons such as always having the lenses shading you instead of accidental arc strike (especially in stick welding) and having the helmet up and if you're welding around other welders you'll spend less time avoiding their arcs.
They also can help your accuracy while you practice and reduced fatigue and neck-flip soreness.
Also you can safely watch the puddle cool while still bright instead of flipping up to a white hot puddle that you'll stare at.