History and more info on camera lenses
CAMERA LENSES. THE OPTICS OF PHOTOGRAPHY. A solar beam of light is a bundle of rays; a ray being the smallest portion of light which can emanate from a luminous…
Camera Lenses for Beginners
Nikon 20mm f/2.8D AF Nikkor lens and Canon EF 20mm f/2.8 USM wide angle lens are two good choices for beginners if you are looking for a wide-angle lens.