Lens caps are important for protecting expensive camera lenses from damage. Dust, grit, and other nasty things will all quickly spoil the quality of a shot, and can even permanently damage a lens ...
A body cap lens does exactly what it says on the tin: it's a camera lens with proper optical elements (unlike, for example, a ...
The BCL-15 f8.0 Body Cap Lens serves as a body cap when carrying the camera around without its interchangeable lens, and transforms to become a pan-focus snapshot lens to capture images.