Definitions for "Lenses"
Lenses are devices that redirect light. In photography, lenses are used to focus an image for the film. Holographers use lenses to widen a laser's beam to illuminate all of the object being holographed.
Lenses are devices which redirect light. In photography, lenses are used to focus an image for the film. Holographers use lenses to widen the lasers beam to illuminate all of the subject which is to be holographed.
There are two types of lenses, convex and concave. Convex lenses (also called "minus lenses") diverge light rays while concave ("plus lenses") converge light rays. These properties of the lenses mean that they are used respectively for myopia and hyperopia.
Keywords:  oneshift, operation
a oneshift operation
Accessories used to achieve different effects from the same fitting.
There's a huge variety of camcorder lenses. You can interchange them to create various effects and take videos from various distances.