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[filmscanners] Re: Real-World Scene Brightness Range



Nothing like real data ......I also took measurements (EV) with spot meter
at noon in a very clear, sunny Los Angeles.  White T shirt and black knit
shirt.
              Full Sun   Medium Shade   5 Ft inside House
White Shirt      18.0
Black Shirt      13.2       9.4              7.0

Result: 8.5 stops between bright white in full sun versus very non
reflecting black in medium shade.

On 5/13/02 10:20 AM, "Stan McQueen" <stan@smcqueen.com> wrote:

> At 03:26 PM 5/13/2002 +0100, David Hoffman wrote:
>> At 14:20 +0200 13/5/02, Anthony Atkielski wrote:
>>> I'm not so sure.  There's often more light falling on dark objects in the
>>> shade than one might think
>>
>> So we both don't really know! If the sun ever comes out again here
>> I'll measure it.
>>
>> Want to bet? Loser does the spotting on a horrid B+W (non ICEable) Nikon
>> scan?
>>
>> David Hoffman
>
> I took actual measurements (a radical step, I know, and one inconsistent
> with the nature of research on the internet) yesterday afternoon about 3:00
> PM. The sky was cloudless, the sun was bright, and the shadows in my
> backyard were deep from the surrounding trees. I read about EV9.5 from the
> shadows and EV16.5 from the concrete driveway. Pointing the meter (a
> 1-degree spot meter) at my open back door into my darkened house, I could
> almost get down to EV8. There is so much light scattering from the air,
> reflecting from nearby objects, and from skylight, that shadows in nature
> just don't get very dark. In a dark forest, you would have dark shadows,
> but you would also have dark highlights. In a fully-lit scene, shadows look
> very dark to our eyes because our eyes are stopped down to accommodate the
> bright sunlight.
>
> Stan
>
> ================================
> Photography by Stan McQueen
> http://www.smcqueen.com
>
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