--- Alex Zabrovsky <[EMAIL PROTECTED]> wrote:
> I posted this thread a while ago but due to some new
> info I would like to
> re-assert it again.
> I noticed my EOS-3 body is quite sensitive to
> backlight entering the finder
> while it is exposed )not looking through it and no
> eyepiece shutter is
> used). I noticed the metering changes in wide
> boundaries (ranging from 1/3
> to as high as 1, 1.5 stops).
> Being traditionally Minolta user I do not remember
> such sensitivity level of
> my 700si/800si bodies (if anybody here familiar with
> them).
> I just spoke with Canon authorized lab and they
> approved that EOS bodies (as
> well Nikon's) are built in the way that light
> sensitive (exposure metering)
> sensors are located in the way that light streaking
> the finder will directly
> hit the sensors influencing greatly the metering
> (hence the eyepiece shutter
> is the must), while he acknowledged that Minolta
> behalves more reliably in
> such situation.

I haven't made much use of Minolta's since the old
SRT-101 model, about 30 years ago.  BUT, any SLR that
has the metering sensors in the pentaprism head,
reading off the viewfinder screen, is going to measure
light reflected off the screen just as it reads light
coming through the screen.  There's no way for the
metering cells to tell the difference.

AND, every AF SLR I'm familiar with meters off the
screen.  There's just no room elswhere in the body for
the kind of sophisticated, multi-sensor meters in use
today.  While the specific location of the sensors may
make some difference in sensitivity to light coming
through the viewfinder, every AF SLR I've used or
played with shows the problem.

When your eye is against the viewfinder (even wearing
glasses, like I do), it really isn't a problem.  And
if you're metering with your eye away from the
viewfinder, just hang a rear lens cap or somthing
similar over the eyepiece.

=====
Bob Meyer
I wish I knew what I know now, when I was younger...

http://www.meyerweb.net/epson

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