A stands for automatic aperture. These lenses have a 'A' position
on the aperture ring that put the lens in the automatic aperture
mode (the body should also be compatible)
FA stands for autofocus and automatic aperture
K stands for K-mount lenses
Alex
Amita Guha wrote:
>
> Hi all, I have a newbie question. I was just wondering about the
> significance of the letter(s) before the focal length of a lens. For
> example, the A28-135. I checked Boz's page but I couldn't find anything
> explaining it.
>
> Thanks,
> Amita
>
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Alexandre A. P. Suaide, Ph.D. mailto:[EMAIL PROTECTED]
STAR/EMC Research Group Phone: 1-313-577-5419 (Detroit)
Department of Physics and Astronomy Phone: 1-631-344-7635 (BNL)
Wayne State University
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