Light meters - end of story?

[P3D Dr. George A. Themelis <fj834@xxxxxxxxxxxxxxxxxxxxx>]

>Yes, I do believe there is such a thing as "perfect" results...  

Not long ago Morris Keesan correctly pointed out that the "good 
exposure" depends on the intended application, like viewing the slides 
in a "halogenized" viewer, vs. projection.  I certainly agree, and this 
is a further proof that "perfect results" is not a universally accepted 
concept, but it depends on factors like the light bulb that you use in 
your viewer and whether it is frosted or shortened or both! ;)

I think we have both presented our ideas... End of story for me... 

Newbie lesson No. 1:

To remember the series of aperture settings, start with 2 and 1.4 
(actually, 1.4 is the square root of 2).  Double each number 
consequtively.  You will get:

1.4  -  2  -  2.8  -  4  -  5.6  -  8  -  11  -  16  -  22 ...

So there is some logic to this sequence of numbers after all!  Going 
from on setting to the next, you cut light by half.  The 3.5 maximum
aperture of many stereo cameras is between 2.8 and 4.

"Sunny day rule":  On a sunny day use f16 and 1/ASA.  I use ASA 100 film 
so for me this becomes f16 and 1/100.  One could also use f22 and 1/50 
but this is not a good idea for a number of reasons...

George Themelis


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