On 9 Sep 2002 09:25:25 -0700, paulcrowder@hotmail.com (paulisme) wrote:

>I recently went shooting with three lenses: a Nikkor 24mm f2.8 lens, a
>Nikkor 50mm f1.4 lens, and a Nikon Series E 75-150 f3.5 zoom lens. I
>used the same circular polarizer on each lens, and shot the same
>subject, which was an orange (yes, orange) church with a very blue sky
>above. I noticed when I received my prints that the sky was
>significantly more blue the wider the lens was. The 24mm caused a
>really rich blue sky, the 50mm was slightly less blue, and the 75-150
>(at about 100mm) caused a much lighter blue than the 50mm. The same
>goes for the church itself. I took them all from different
>perspectives and thought that might have had something to do with it,
>but then I realized it couldn't have, since I wasn't really any closer
>to or further way from the sky (if that even makes sense). I was just
>wondering if anybody else has experienced this and what your
>explanation would be.

If you shoot the same subject at the same angle and distance
(without the polarizer) with all three lenses at the same
exposure and use f8, you will see no difference in the
images of the lenses listed other than angle of view. What
you are seeing in the prints is a combination of different
shooting angle (and different polarization angles),
different exposures from different sky amounts in the
photos, but maybe mostly differences in the parts of the
sky shown. Even on a very clear day, the sky shot with the
same exposure will show a lighter blue toward the horizon
than more overhead; the wide-angle shows more of this
darker sky area than a tele when aimed toward a "ground"
object like a building...