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To compensate for that shallow depth of field the muscles in your eye must distort the lens to focus the image on the retina. The depth of field of the wide open lens is much shallower than the depth of field of a restricted lens. When the pupils are wide open, light comes through a much larger area of the lens. The small pupils cause the light entering your eye to pass through only the center of the lens. You can also set the shade of the darkening but try not to get that wrong so you don’t damage your eyes.īack to seeing better with more light, that’s because in poor light the pupils of your eyes are wide open and in bright light the pupils are small. I like that because as soon as you let the trigger go you can see clear as day, and you see clear as day until you pull the trigger to start so your wire is where it needs to be at the beginning of every pass. You can get an auto darkening helmet too. I just picked that number out of the air but it’s relative to the thickness of the metal you are welding. For sheet metal the welding amperage is probably less than 50 amps.
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With a 50 amp machine you can get by with a lighter filter than if you were welding with a 300 amp machine. Ask them about the lens shading you should use based on the power of your welder. You can get a 3 or 4 diopter lens to mount in your welding hood at the welding supply store. I don’t want to argue with your eye doctor but when you see better with more light that tells me you need reading glasses.