and is a series 5 hood usually 34mm?
Joe, I have several series VI filter holders with different sized openings to slip on lenses. So the series number is the size of the filter it holds, while the size of the holder varies in mm. For instance I have a series VI filter holder sized 31mm and another, also series VI, sized 36mm.
“Believe nothing, no matter where you read it or who has said it, not even if I have said it, unless it agrees with your own reason and your own common sense.” – quote
I myself am made entirely of faults, stitched together with good intentions. -quote