[rollei_list] Re: F16 Rule was Re: New Pics Posted....Rolleiflex and Zeiss Ikon images..

It is to laugh! In my world, meter readings indicate a decrease in brightness.

My Luna Pro (recently tuned up at Bogen) sez ISO/ASA @ f9.5-ish, almost never suggests f16. I have been metering under these skies for more than 50 years, off and on, and have a feel for the area's illumination. Other photographers here agree there is, on average, less intensity to the light than in former decades. Many locals think this anomaly is attributable to atmospheric changes and/or air pollution.

I report, you decide.

Allen Zak

On Jan 31, 2006, at 3:16 PM, Peter J Nebergall wrote:

In the past 21 years, I and my luna-Lux have noticed a one+ stop gain in
"full-sun" brightness. asa 100 full sun is now, according to all my gear
including the Nikkormat FTn I took the 1984 measures with (yes I still
have it), closer to 1/250 at f16. The moon is brighter too! I suspect
loss of ozone layer is part or all of this change. Folks sunburn faster
(I had an uncle in the DAK, the Afrika Korps -- and with today's UV-risk,
spending months in the Sahara is an impossibility) -- so maybe more light
is getting through? The Greenies say so, my meters agree, and so does my
skin. -- RED.

I suspect it is time to revise the f16 rule... to maybe an f22 rule?

Peter Nebergall

On Tue, 31 Jan 2006 13:10:11 -0500 Aaron Reece <oboeaaron@xxxxxxx>
writes:

In full sunlight at f/16 use 1/ASA as the shutter speed.

-Aaron

On Jan 31, 2006, at 10:24 AM, Don Williams wrote:

I do recall the "sunny" rule, which has been discussed by this
group but sadly have forgotten it.  I think it started with bright

sun, f16, and some film speed but don't recall the ASA used. 

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