So the answer is that the camera possess the algorithms for AF but the
performance is based both on the algorithms and how responsive the lens
mechanism is? If that is correct then a lens that seems to "hunt" more
than another is not directly at fault? It is the camera algorithms not
being able to adequately handle the responsiveness of the lens?
Interesting. Of course you would still want to avoid such a lens because
it is the system as a whole that is important and therefore an
unresponsive lens that causes the camera to hunt is still a bad thing
regardless of which component is actually "at fault".
Larry Cook
So which is responsible for the AF performance? Is it the lens? the camera?
or both?
and how does each influence the AF performance? Inquiring minds want to
know....
Both. Some AF lenses have lighter and smoother AF mechanisms might AF
faster. Some AF bodies have stronger AF motor might AF faster. Some AF
bodies have better algorithms might lock focus and track moving subjects
better.
Alan Chan
http://www.pbase.com/wlachan
