In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself. Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. Half stop clicks are from f/2 through f/16. It extends 1.8' (46mm) from the camera lens flange and is 2.5' (64mm) around. It has 7 multicoated elements in 6 groups. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens. This is an excellent manual focus lens from the 1970s. Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood. When it was first introduced, no other zoom lens could top its image quality and it really didn’t. The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. Made in 1975, this manual focus Minolta MC Rokkor-X 40-80mm f/2.8 lens is one strange puppy.

This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. 42 West 18th Street 9 New York, NY 10011 ' OLYM PUS OLYMPUS ZUIKO LENSES.

Minolta md 50mm 1.8 lens adjustments