What I heard is normal lenses are design optimum at infinity. BTW most
Zuiko standard to wide lenses without close focusing correction are
not good at close distance (e.g. at 1:10), I can say it is only
usable.
C.H.Ling
dreammoose wrote:
>
> It is not possible with current technology, at least at prices we
> would/could pay, to design a lens that is acceptably sharp at both 1:40
> and 2:1. The conventional Zuiko wide angles are designed for optimum
> performance in conventional photography from infinity to about 1:6, and
> probably optimum about 1:40. The short focal length macro lenses are
> optimized for much different repro ratios, in the case of the 20/2,
> 4.2:1 through 16:1. Use of just about any conventional lens beyond about
> 1:2 will give noticeably inferior results.
>
<snip>
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