Canon 52mm drop in gelatin filter holder ii
The 52mm drop in gelatine filter ii holder allows you to fit various gels onto your canon telephoto lens for example uv skylight gels etc it is compatible with the canon ef 500mm f4l is usm canon ef 400mm f4 do is usm canon ef 300mm f28l is usm canon ef 400mm f28l is usm canon ef 600mm f4l is ii usm