I've been out photographing eagles this week and have been mystified by my
meters.
The Sunny-16 rule states that on a bright sunny day you can use F16 at
1/ISO. I'm using Fujichrome 50 so that means that it should be
approximatily F16 at 1/60.
Supposedly the sunny-16 rule is applicable anywhere on earth in any season.
In my experience this isn't necessarily so. I have almost always ended up
going down one stop in the wintertime. (unless I am capturing snow detail).
Now here is the mystery: This winter, I've been running at least two stops
down. This is confirmed by multiple cameras and processed slide film.
Are we experiencing a "nuclear winter" or was there some big volcano this
year (other than 'Dantes Peak'), that has reduced solar illumination? In
all of my years of photographing, I've never seen this much variation from
the norm since Mt. Penitubo (sic) blew it's top off.
BTW, the eagles are back. I've been able to get within 20 meters without
any problems or using blinds. I came across six in one tree! ...oh, for a
big lens...
Ken Norton
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