Typically the other sensors are less sensitive, the centre sensor is the
only one they can guarantee will work with any lens fast enough for AF.
On my EOS 3 the centre sensor is good down to f8, while the others are
only good down to f5.6.
-Adam
Patrice LACOUTURE wrote:
Anyone here has an idea why Pentax implements such a restriction?
2006/1/22, John Francis <[EMAIL PROTECTED]>:
On Sun, Jan 22, 2006 at 01:52:38AM +0100, Patrice LACOUTURE wrote:
2006/1/22, Alexandru-Cristian Sarbu <[EMAIL PROTECTED]>:
Although I can't figure out any reason why it is so, the *ist limits
itself to central AF point with non-AF lenses...
That's correct. I've reported this before. It's not just on
the *ist bodies, either - it seems to be true on any AF camera
(with more than one AF point, obviously).
In fact you're restricted to central-point AF even when using
the AF 1.7x adapter, which I find more than a little annoying.
