This is especially useful when using the lens for video with a matte box

World’s first* 14mm filter-attachable lens

You download the free Tamron TAP-in Utility and install it on their Mac or PC

for dynamic power in every detail of your music and movies

powered speakers and other A/V components

Vivitar Action Camera Head Mount For GoPro & Other Action Cameras Lens Caps This is especially useful whenThe Vivitar Pro Series Head Strap Mount keeps your action camera or GoPro camera mounted to your head without a helmet. Keeps your hands free and allows you to stay focused when climbing, swimming, performing search and rescue operations or any other activity where a helmet isn't needed or required.