Hi Giles,
50/50 is the answer. The 75~150 is constant (f/4) and the 35~70 is of
the f/3.5-4.5 type.
So the problem you are hinting at (in case I do get your point) only
exists with the widest aperture setting in the 35~70. All other
apertures from 5.6 onwards should be constant over the zoom range.
Pls correct me if wrong. OTOH, I never noticed any systematic deviation
in the pictures.
Cheers,
Soenke, Hamburg
Giles wrote:
>
> Are you using constant aperture zooms?
>
> Giles
>
> > From: Soenke Jansen <SoJa@xxxxxxxxxxxxxx>
>
> > I'm using zoom lenses most of the time (slides aren't easily cropped),
> > so metering most often works like this:
> > select an aperture, zoom in, take a reading, zoom out to the desired
> > frame, turn correction dial to adjust for the first reading (plus some
> > guesstimated additional correction), take picture.
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