Greg, I donīt know this rule too but I know the Lunar 11 ... it says you have to use 1/ISO as speed when shoting full moon ... I tried once and worked. Yours, Charles >From: Gregory Fraser <Gregory.Fraser@pwgsc.gc.ca> >Reply-To: photoforum@listserver.isc.rit.edu >To: List for Photo/Imaging Educators - Professionals - Students ><photoforum@listserver.isc.rit.edu> >Subject: Loony f4 rule >Date: Wed, 21 Aug 2002 09:55:51 -0400 > >Of course we all are on a first name basis with the sunny f16 rule but have >you heard of the loony f4 rule? This is a serious question. I never heard >of this rule and I've read a lot of books etc. > >For anyone else who never heard of it, it is apparently a basis for >exposure under a full moon and the formula is this: > >1/film speed x day. 'day' = 864000 which is the number of seconds in a day. >So for ISO 100 film, you would have 1/100 X 864000 = 864 seconds or 14.4 >minutes at f4. > >Now if you have heard of this rule, do you know if there is a formula for >half, quarter and eighth moons? > >Greg Fraser >http://users.imag.net/~lon2251/Gallery T+ Charles "Itīs no better to be safe than sorry" In "Take on Me" song by A-Ha _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com
