EOS-Digest wrote:
> 
> > Add to that the lack of clear cut documentation from Canon.
> 
> No. What the camera/flash does is pretty well documented.
> 
Ok, where is this documentation then?
I had to collect most of the really important pieces of information
from the web, and even that is incomplete.
Not only about the various ways the camera sets aperture/exposure
time under different light and in the different exposure modes, but
also which metering patterns it uses.
Where in the camera manuals do I find a picture of the TTL sensor's
metering pattern? Where does it tell me which metering pattern the
camera uses for ambient light/for flash in ETTL mode?
You'd expect this to be exactly what you selected on the camera, but
apparently it is not.
I remember the usenet debates about the EOS 3 going to average metering
for ambient light as soon as flash is on, even if spot was selected on
the camera.
Then with the digital bodies, the behaviour is yet different.

No, I wouldn't call this "well documented" ;-)

To add a concrete question: what does the TTL metering pattern
of an EOS 30/Elan 7 look like? As it probably has more than one
"field", how are these fields weighted against each other?
Does the selected AF point go into this calculation?
(Im talking about TTL here, not E-TTL.)

br/Stefan.
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