I'm owner of an excellent EOS 40D for the last 3 years...
There is a little incovenient that I haven't fit correctly.
I'm using always the "center point" of the 9 point focus.
Shooting with my zoom Tamron (18/270 IS), when in 200 or above, when I "catch the focus" I need to compensate the exposition dependindg on if the "point focus" is dark or bright. If it's bright, closing 1/2, 2/3 even 1 f stop. Or, if it's dark, opening ...
Does anybody know how to SEPARATE the function "Focus" / "Exposition" when I shoot?
I've read repeteadly the manual (C Fn IV, for instance).
My goal would be: Using the little red point to focus, not to expose. Otherwise, I need to carry a lightmeter...(as when I was on my old Minolta)