PolarPro Helix Peter McKinnon Edition 4-Slot Filter Case

Wide angle L-lenses typically have a gelatin filter holder on the mounting point of the lens, which allows the photographer to cut a small,

slot in the firewall A long, thin rubber seal plugged the slot when the filter was installed The filter could be vacuumed and washed prior to installation

filter slot cover The coupling slots are initially located at a quarter of the cavity length from the edge of the cavity to maximize the coupling The slot width

thunderstruck 2 mobile slot Highlights • A simple wideband dielectric resonator filter is proposed • The dielectric resonators play a critical role in the proposed