Canon FD Lens, Manual Book

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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. 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.
Performance check 1: The sharpness of Canon FD lenses covers all corners
of the image.
Taken with a Canon FD lens. Sharpness, form, and color create a
look of quality.
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