If one was to have a common filter size for most lenses what size would this be. On the assumption that many lenses are 67 or smaller what would be a safe oversize filter size to use. 77 ?. There are other many larger lenses, but commonsense must dictate, to a point anyway. With wide angle lenses 110XL 90, and 75's at what diameter filters on step up rings will vignetting clear?
If a bigger dia. lens was acquired I suppose moves one to square filters. But I was working on the idea of trying to have a common size of spin on filters.
To that end is there a favourite filter ring to use. Is brass better? Less grab? Who makes the better filter rings. Heliopan?
If one used Rosco gels behind the lens, easy if taped, would this cause less degradation than using glass behind the lens?
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