Sigma Front Cap Adapter for 4.5mm F2.8 EX DC Lens is a lightweight and fine quality material construction for durability and reliability. It is a retainer ring which allows the front cap to be installed. It is compatible with Sigma 4.5mm F2.8 EX DC HSM lens and allows you to attach front cap to the compatible lenses. It can be easily install and remove.
Features
Retainer ring which allows the front cap to be installed.
Very comfortable to attach and remove.
Fine quality material construction for durability and reliability.
Allow to attach front lens cap to the compatible lenses.