PolarPro Helix Defender Plate Brand_f-stop compact size—and price—that defies convention

compact size—and price—that defies convention

the invisible Ultra-Violet component of light from the sky is a common issue

Dual CFexpress Type A /SDXC/SDHC compatible media slots

For Use with EN-EL18d Battery

Sony A7R3 cage 15 mm rod system (A73ROD)

PolarPro Helix Defender Plate Brand_f-stop compact size—and price—that defies conventionProduct Features For Helix Magnetic Filter System Protects Lens Front Element Fast, Secure Mounting and Removal In the Box PolarPro Helix Defender Plate Overview The PolarPro Helix Defender Plate is designed to provide a secure and fast mounting and removal option for the Helix filter system threaded plate. It utilizes magnets and a 1 4 turn to lock for a reliable and safe protection of the front element of a lens during storage or transit.