So I have a brand new G5-01 VC immediately noticed bottom and top quarters of the lens has a darker band the middle of lens shows a lighter shade in dark state, I selected cool colour I have a blueish white band top and bottom and then orange white across the centre when I move my head up and down whilst welding it's changing colour and shade , I've just been sent a replacement VC filter and this is exactly same , also the colours advertised are no where near what i have , i have gold, orange/white, and pure red when I select colours , Could this be because the optical class for this lens is a 1/2/1/2 ,were as the TW version has 1/1/1/1, I've got the 9100fx XXI and the lens does not do what I'm seeing on this new G5-01