The innovative new drop-in filter design of the M7 filter holder allows the M7 drop-in filter to be placed in a dedicated filter slot that creates a light tight seal while still allowing for the use of square and rectangular filters using the filter guides found on traditional filter holders.
The M7 Graduated ND filter provides a soft transition from clear to ND within the filter. The nano-multicoated CPL filter features anti-reflection and anti-color cast properties, and conveniently fits in the dedicated drop-in slot of the M7 filter holder.