"Chris T. Daida" schrieb:
>
> [EMAIL PROTECTED] wrote:
> >
> > Why is it everytime you read about Nikon vs Canon, Nikon people including
> > Phillip Greenspun (Canon user) always say Canons flash metering is inferior
> > to Nikons. I have used Nikons and think there flash metering and fil flash
> > is very good, but can Canons be that much worse? Is Canons flash good or
> > does it appear to give the deer in headlights look?
>
> As I recall, Greenspun's comments about Canon's poor flash
> metering were most critical on his review of the EOS 5, which
> used A-TTL. Some of the images he posted on photo.net
> demonstrated subject overexposure and background
> underexposure--not very good as far as "fill flash" goes. I'm not
> sure if much improvement has been made since A-TTL, since I never
> used a type B camera, but I've read glowing (and also some not so
> good) comments regarding E-TTL. My own experience has been
> generally good. Most problems have been my fault.
While I agree that A-TTL is certainly not the ultimate fill flash
mode on earth, it would probably have worked fine for the image
Greenspun shows as an example of the "inferiority" of A-TTL.
Seems like he was (is?) not aware, that recomposing after AF has
done its thing is a big nono with A-TTL and even with TTL in case
of the EOS 5 and similar (older) cameras. This is, because TTL
flash metering in this case works as a "partial" metering with
most of the weight on the region(s) linked to the active AF sensor.
If you focus on the person in the foreground and then recompose
so, that the most important regions now meter the distant background,
this will obviously lead to overexposure. It is worse than the dumbest
single sensor TTL flash metering in this case, because the main subject
will not be metered at all.
I certainly agree that Nikons 3D flash metering is far superior in
this respect, because you can't mess it up as easily by "user errors".
Thomas Bantel
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