On Mar, 12 mag 1998 13:29, C.H.Ling <mailto:chling@xxxxxxxxxxxxxx> wrote:
>I don't think the new design lenses are better then the old one. The old I
>mean from 1980-1990, of course not the 1960's design. One of the critical
>limitation for newer design are the lens group for focusing have to be
>smaller and lighter. Internal focusing dominated the tele market and which
>require more lens elements. Which will make lens design more difficult and
>increase the cost, so quality and cost have to be balanced.
>
Yes, and there is another bad news: that IF decreases focal lenght... and
aperture too, maybe.
Marco
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