Canon FD Lens Посібник з експлуатації - Сторінка 22

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Performance check 1: The sharpness of Canon FD lenses covers all corners

of the image.

Without a lens, a camera alone won't get you very far. This

vital addition to the camera should be like a best friend: com-

patible, loyal, unfailing. It follows logically that the best com-

panion to your Canon SLR is a Canon FD lens. Designed and

built according to the exacting standards of Canon's top-

of-the-line SLR, the F-1, FD lenses are all of equally high

quality. Here are some tips on checking aspects of lens per-

formance that don't show up in the specifications. Of course,

you can be sure that all Canon FD lenses perform beautifully

in terms of optics, mechanism, and reproduction accuracy.

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Taken with a Canon FD lens. Sharpness, form, and color create a

look of quality.

First is the issue of a lens's sharpness. A lens can only be

considered truly sharp if it has both the resolving power to

produce fine details in the image and the contrast to accurate-

ly reproduce shadow gradations. Alone, neither can render

true sharpness. If a lens is capable of contrast only, details are

lost when a picture is greatly enlarged. The picture above,

taken with an FD lens, is extremely sharp; this sharpness

would be retained even if the picture were enlarged to poster

size.