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. > > --- > Rollei List > > - Post to rollei_list@xxxxxxxxxxxxx > > - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' > in the subject field OR by logging into www.freelists.org > > - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with > 'unsubscribe' in the subject field OR by logging into > www.freelists.org > > - Online, searchable archives are available at > //www.freelists.org/archives/rollei_list > > --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list