I do use auto focus but I manually select my focus point that I want to use, this way, especially for the eyes, I pick the focus point that is over the eye. I have an XTi, and I think it the same for the XSi, but you can't choose multiple focus points in manual.
I don't know about the zooming thing.
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Lori Putman flickr
~No one can drive us crazy unless we give them the keys
~~Life isn't about waiting for the storm to pass, it's about learning to dance in the rain!
7D | 300L f/4 IS | 135L | 35L | 100/2.0 | 50/1.4
430 EX, 580 EX II Speedlites
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