this may be dumb but... [Archive] - Digital Camera Resource Page Forums

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HAPPeBOY

11-10-2005, 04:26 PM

what is TTL autofocus?

how does it differ from the 9-point AiAF (Automatic Focus Point Selection)/1-point AF (Fixed to centre)?

is one much better?

ktixx

11-10-2005, 04:36 PM

TTL means Through The Lense. AiAF means Artificial Intelligence Auto Focus. I am pretty sure that AiAF is done through TTL. AiAF is a system developed by Canon to assist digital cameras in focusing and TTL is the method which the focusing is done.
Hope This Helps...
Ken

JTL

11-10-2005, 04:42 PM

The way to think of it is that AiAF is a TTL implementation...

HAPPeBOY

11-10-2005, 05:01 PM

oh ok that makes more sence

thanks