> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Bob Talbot
> Sent: Friday, January 05, 2001 5:18 PM
> To: [EMAIL PROTECTED]
> Subject: Re: External metering, EOS, and birds.
>
>
>
> > Ideally, with incident metering, you should be at the subject
> position and
> > aim the meter sensor towards the light source. Since you and the
> bird are
> > about the same distance from the light source, give or take a couple
> of
> > yards, you should be fine.
>
> Henry
>
> First: A quote from the manual for My Minolta IV F (section on
> incident light readings)
> "Position the meter near your subject, aim the receptor directly at
> the camera lens, and press the button".
>
> But reading older books it does indeed say "point it at the sun".
> This has me thinking: Minolta's technique works *for me* totally
> irrespective of where the sun is: even behind the subject for contre
> jour. Even in theory, for a flat subject perpendicular to the camera
> the illumination is indeed best estimated normal to the camera NOT the
> sun.
>
> For now I'm going to keep using my meter according to the manual
> (which is coincidentally the way that works). None of those "old
> books" talk me through how incident readings should be taken when the
> sun is behind the subject (which is often where the best images come
> from). I'll ponder this one further ...
Keep in mind what you're actually measuring. When you ain the ball at the
sun, you're basically finding out what the brightest part of the subject
will be. If you were to aim the ball directly opposite the sun, you'd be
determining the darkest part of the subject (with exceptions). Aiming the
ball at the camera will provide an average, and probably give a pretty good
exposure. The ratio of highlight to shadow on the ball will closely
approximate that on a human face (that's why a ball is used; some incident
meters also provide a flat disc for measuring lighting ratios).
Chuck Skinner
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