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

  • From: Peter J Nebergall <iusar4s@xxxxxxxx>
  • To: rollei_list@xxxxxxxxxxxxx
  • Date: Tue, 31 Jan 2006 14:16:45 -0600

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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