Hello, I have a Schneider original center filter for the Super-Angulon f8/75mm lens. I know it is supposed to even the lightfalloff by darkening the center of the lens. I then assume I need to add some stop to the lightmeter reading to get a correct exposure. 1) Does anyone know how much stop I should add to the lightmeter reading?
I think that the light falloff varies with the aperture size (?)
2) Does the centerfilter only add value when the lens is not stopped down or is it useful regardless of aperture?
3) When should I use this filter and when should I not use it?
Kind regards, Patrik.
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