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BigMike · Nov 22, 2002, 6:21 PM

I have read some post saying that the A40 achieves better focus with the aiaf off. Since I really don't understand what the aiaf does for sure, thought I would ask what you folks think about it.

Also, I like to take outdoor scenery type shots. Is one method better than another for achieving proper focus and exposure when shooting landscapes? Thanks for the help!

xboy · Nov 24, 2002, 4:13 AM

i don't thing it have to be switched off.

MentorRon · Dec 15, 2002, 12:45 PM

From what I have read on other posts, the Canon will probably choose the object closest to the lens within the wide autofocus frame. If you chose the spot focus it will focus on a smaller area in the center of the image. That gives you more control over precisely what it is that is focused on.
I think the AiAF was desgned to help newbies when they took portraits of two people and the older AF systems would focus on a distant object BETWEEN the two people, putting the two people out of focus. The AiAF frame brackets are about twice as wide as other frames, and will hopefully focus on at least one of the two persons.

Nov 22, 2002, 6:21 PM	#1
BigMike Member Join Date: Oct 2002 Posts: 61	A40 better with the Aiaf on or off? I have read some post saying that the A40 achieves better focus with the aiaf off. Since I really don't understand what the aiaf does for sure, thought I would ask what you folks think about it. Also, I like to take outdoor scenery type shots. Is one method better than another for achieving proper focus and exposure when shooting landscapes? Thanks for the help!

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Nov 24, 2002, 4:13 AM	#2
xboy Junior Member Join Date: Nov 2002 Posts: 4	i don't thing it have to be switched off.

Dec 15, 2002, 12:45 PM	#3
MentorRon Senior Member Join Date: Sep 2002 Posts: 307	From what I have read on other posts, the Canon will probably choose the object closest to the lens within the wide autofocus frame. If you chose the spot focus it will focus on a smaller area in the center of the image. That gives you more control over precisely what it is that is focused on. I think the AiAF was desgned to help newbies when they took portraits of two people and the older AF systems would focus on a distant object BETWEEN the two people, putting the two people out of focus. The AiAF frame brackets are about twice as wide as other frames, and will hopefully focus on at least one of the two persons.