OK....so if I am reading you right......for 100 speed film at f16.....I would expose for 100 seconds??? Is this right or am I wayyyyyy off LOL ~~Rose Pasquarelli ----- Original Message ----- From: "David Dyer-Bennet" <dd-b@dd-b.net> To: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@listserver.isc.rit.edu> Sent: Friday, August 23, 2002 1:26 AM Subject: Re: shooting the moon > rosebudlet <rosebudlet@netzero.net> writes: > > > I was just wondering how long to expose at bulb for a shot of the > > moon....between 1/2 & full (moon that is) :-p > > The phase doesn't matter if the moon itself is your subject; the > brightness of the bright portion is essentially constant (the main > variable is the clearness of the air between you and it, and that > doesn't vary with the phase). > > I learned this one from an Ansel Adams book. There's a rule of thumb > for exposing an object in direct sunlight -- the "sunny 16" rule. You > give it 1/ASA at f16, for whatever ASA film you're using. > > Well, the moon is an object in direct sunlight. > > There's one trip through the atmosphere either way, so that should > even out also. > > Of course when estimating exposures by rules of thumb, it's a darned > good time to *bracket*. > -- > David Dyer-Bennet, dd-b@dd-b.net / New TMDA anti-spam in test > John Dyer-Bennet 1915-2002 Memorial Site http://john.dyer-bennet.net > Book log: http://www.dd-b.net/dd-b/Ouroboros/booknotes/ > New Dragaera mailing lists, see http://dragaera.info > > ------------------------------------------- Introducing NetZero Long Distance Unlimited Long Distance only $29.95/ month! Sign Up Today! www.netzerolongdistance.com
