Canon 10x30 IS II Manual - Página 6

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Magnification refers to the ratio of the size as seen with the

naked eye and size obtained with the binoculars. For example,

if a pair of binoculars has 10x magnification, an object will be

enlarged 10 times. In other words, something 100 meters away

will look 10 meters away through the binoculars.

A car 100 meters

away with the

naked eye.

A car 10 meters

away with the

naked eye.

Magnification and focal length

A 1,000 mm telephoto lens for a camera will provide five times

higher magnification than a 200 mm lens. The same applies

to binoculars, in that an object is enlarged five times more

with 20x magnification binoculars than with 4x magnification

binoculars. The only difference is that, while a telephoto lens

must be wide enough to magnify the image for the fairly

wide aperture of the camera, binoculars need only magnify the

image for the relatively smaller iris of the human eye. Say for

example you have 12x magnification binoculars. To get the

same enlarged image using a 35 mm Single lens reflex camera,

you would need to use a 700~800 mm telephoto lens.

With a 10x magnification binoculars,

a car 100 meters away will seem as

if it were 10 meters away.