In Ten Words or Less.

Wide Angle Lens

• A lens with a short focal length used to capture a large area of space 

Zoom Lens

• A lens that can increase and decrease focal length

Long Focus lens

• Used to take photographs at long distances

Telephoto Lens

• Magnifies the subject so they seem closer than they are. 

Retro Focus Lens

• A Wide Angle lens that uses the inverted telephoto design.

Quasi Fish Eye Lens

• A lens that creates an image that spans the whole frame

Fish Eye Lens 

• A lens that distorts the image by magnifing the middle and reducing the edges.

Catadioptric (Mirror) Lens 

• A lens the utilises the light with mirrors rather than a lens.

Macro Lens

• A lens that allows the photographer to be insanely close to the subject with a crisp focus. 

Teleconverter Lens

• A lens that can be attached to another lens to increase the magnification but cannot be used by itself. 

Supplementary / Close up Lens

• A lens that is fitted between body and lens to add focal length and increase magnification, similar to a macro. 

Tilt Shift Lens

• A lens in a mount that can be used to change the perspective of an image, manipulating the restrictions of depth of field.