Abstract: A method of securing a filter to a lens includes urging a filter into a flexible sleeve of a filter holder such that the flexible sleeve stretches to accommodate the filter and grasps the filter and securing a flexible mount of the filter holder to the lens such that the filter, held within the flexible sleeve, is positioned in front of the lens. The flexible sleeve and the flexible mount are defined by a support structure that includes a stretchable material.

Abstract: An apparatus, system, and method for mounting accessories on device, such as a camera, binoculars, firearm, weapon, and the like. The apparatus, system, and method may include a mounting device, which may be a bracket or rail. The apparatus, system, and method also include a safety mechanism that may be an integral part of the mounting device, or may be coupled or attached to the mounting device. The safety device allows accessories to be attached to the mounting device, but also prevents inadvertent detachment of the accessories from the mounting device.

Abstract: A mounting apparatus for releasably securing a device to an auxiliary structure includes a first plate and a second plate formed to engage the first plate. The first plate includes one or more features that allow attachment of the device to the first plate, and a first lateral edge extending at least partially between a front edge and a rear edge of the first plate. The second plate includes a second lateral edge extending at least partially between a front edge and a rear edge of the second plate and formed to engage the first lateral edge of the first plate, a first stopper disposed along the front edge of the second plate, and a second stopper disposed along the rear edge of the second plate. The first plate is configured to be engaged with the second plate in a frontal position and in a rearward position.

Abstract: A mounting apparatus for releasably securing a device to an auxiliary structure includes a first plate and a second plate formed to engage the first plate. The first plate includes one or more features that allow attachment of the device to the first plate, and a first lateral edge extending at least partially between a front edge and a rear edge of the first plate. The second plate includes a second lateral edge extending at least partially between a front edge and a rear edge of the second plate and formed to engage the first lateral edge of the first plate, a first stopper disposed along the front edge of the second plate, and a second stopper disposed along the rear edge of the second plate. The first plate is configured to be engaged with the second plate in a frontal position and in a rearward position.