Reference: big00073
Brand: B.I.G.
Lens diameter 30,5mm - filter diameter 30mm.
Used to mount filters or pre-filters on lenses if the filter dimension is different than the lens dimension.
Reducing rings (also called step up or step down rings) are used to attach filters or pre-filters to lenses when the filter dimension is different from the lens dimension. Thus, they allow you to use one filter/pre-adjustment on multiple lenses. The first is the lens dimension, the second the filter dimension in mm.
Data sheet
Specific References
Reference: big00073
Brand: B.I.G.
Reference: 90431725
Reference: 90431609
Reference: 90431690
Reference: 90431492
Reference: 90431697
Reference: 90431608
Reference: 90431711
Reference: 90431739
Reference: 90431735
Reference: 90431738
Reference: 90431700
Reference: 90431736
Reference: 90431720
Reference: 90431689
Reference: 90431497