> Date: Thu, 3 May 2001 00:12:38 -0400
> From: "Julian Loke" <[EMAIL PROTECTED]>
> Subject: Re: EOS ETTL and Metering mode.
>
> However, D30 users (who quoted Michael Quack and this List) observed
> that evaluative metering is very much like spot metering at the
> selected focus point. Several suggested that forcing centreweighted
> averaging and switching the lens to Manual Focus could better flash
> pictures.
Okay, the quotation was:
>>Michael Quack posted on the Yahoogroups EOS list that turning the
>>lens AF switch to manual will make the camera meter the flash using
>>the metering method set on the camera without the extreme emphais
>>on the AF point.
Chuck responded:
> If that's what he says, then he's wrong.
Hear, hear....
> When the focus mode switch on the lens is set to AF, then
> the ambient meter reading and the flash meter reading are
> biased to the area surrounding the active focusing point.
Okay, half of what I said. So, obviously I'm not fully wrong....
> When the focus mode switch on the lens is set to M, the
> E-TTL flash meter reading is averaged across the entire
> metering sensor and the ambient meter reading is taken in
> evaluative mode as if the center focusing point had been
> selected.
Aha. It's not using the evil spot metering thing with AF
switched off. Another part of what I said.....
> The issue does not seem to have been resolved (especially since
> Michael Quack did not spring to his own defence :-) See:
> http://www.robgalbraith.com/ubb/Forum8/HTML/000606.html
> and
> http://www.robgalbraith.com/ubb/Forum8/HTML/000620.html
Obviously there is one error in my information:
The selector for metering modes is pretty useless
once you use flash. E-TTL will do anything but use
what you selected and with AF off it will do just
average metering.
Nice job, Canon, you really f***ed up this one....
I had previous experience with Canons foul metering
once you use flash. I had a beautiful backlit scene
with a girl sitting in front of a white curtain
with flash to fill for the shadows on her face.
Out of experience I knew that my camera reading
could not be right, spotmetering off her face
with my EOS-1 gave me far too much light.
So I checked my handheld Gossen against that and received
what I expected. Hadn't I paid attention the whole job
would have been down the drain. I was fully convinced
that my camera meter was on the Fritz.
Later I learned that for some really stupid reason
Canon had designed to switch ambient metering to
average when you switch on a flash unit. What for?
And why without warning?
--
Michael Quack <[EMAIL PROTECTED]>
http://www.photoquack.de
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