Canon Lens Dust Cap RF CRK An OSD stepping motor achieves

An OSD stepping motor achieves fast and near-silent autofocus performance along with full-time manual focus override

knurled ring provides manual focus control

Includes a clamp-style phone mount with an accessory shoe mount

and hydrophobic AquaDura coating on outer lens protect surfaces and causes water and oil to bead off for easier cleaning and clearer vision

The Viper Wireless Group Flash Trigger for Nikon Cameras from hahnel provides multi-group wireless flash control to Nikon cameras

Canon Lens Dust Cap RF CRK An OSD stepping motor achievesDedicated to Canon RF mount lenses, the Lens Dust Cap RF protects the lens's rear element from dust and scratches when it is not attached to a camera.