Kinesis Foam Doughnut

The Kinesis Foam Doughnut is a padded collar that is designed to stabilize a telephoto lens such as a 300mm f/2.8 or a 600mm f/4 when placed inside a compatible case or bag. The Foam Doughnut is particularly useful for telephoto lens cases that allow a lens to be stored or carried facing downward with or without an attached camera. In such bags or cases, the section of the lens where it narrows to connect to a camera may have room to shift during transport. By wrapping around a lens toward the front of the mount, and locking into place with a touch-tab fastener before the lens is placed inside a bag or case, the Foam Doughnut can prevent such movement.