Re: [Leica] Autofocusing

["Bryan Willman" <bryanwi@seanet.com>]

It is worth remembering that the AF systems on
high end SLRs are much more refined than on 
point-and-shoot cameras.  I find them easier to
use AND to explain.

As for 4 wd, if you are talking about how it works
on, say, a 1963 ford pickup, then yeah, you give up
a lot.  If you are talking about how it works on a
1998 911 Turbo, then it's a VERY different technology,
and there's little question it's a win.

Now, with *any* automatic system, there can be
an effect were it works great when it works, and
it's truly awful when it doesn't work.  AF systems
in general are this way.  AF systems outside of
SLRs can be very hard to control because of this.
(The SLR let's you see what's going on to gain
 control.)  Manual systems often have a much
gentler fall-off curve.  So when they're not dead
on, they're just a little off, rather than miles off.
This is why the darker and more difficult for
focusing the scene is, the more effective
a Leica becomes.  It's very well tuned for
getting "as close as possible given the
circumstances"

bmw