P3D Re: Sunny 16 rule, baaaaah

["Dr. George A. Themelis" <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Thank you Greg for the detailed explanations on this subject.

>There is another form of metering called "incident" metering.
>Since an incident light reading is independent of the
>subject, no compensation is needed for the subject's reflectance.

Yes.  I might also add that the "sunny 16" type empirical rules
are "incident" in nature too.

>I'm a fan of meters because they eliminate guesswork in situations 
>where sunny-16 doesn't apply (theaters, sports arenas, night shots, etc.). 

There are other empirical rules - extensions of "sunny 16" - that work
in these situations too.  For example, pull out your trusted light
meter in your office at work (not at home but at a well-lit workplace)
and if it does not suggest f11 at 1 sec. w/ASA 100 film, then let
my name not be DrT.

As a matter of fact, I know right now that the room where I will give
my "Getting Started in Stereo With a Manual Stereo Camera" workshop
in Green Bay has this amount of light in it.  I'll bet Tom $10 that
this is the case.  And I have never been to Green Bay!!!

George Themelis


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