Archived posting to the Leica Users Group, 2011/01/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]For years I thought the CIRCLE OF CONFUSION was an insider joke photographers played on people trying to learn photography. And that it really didn't exist at all. Then I tried to place into an advanced photo class in a community college (color printing) and had to take a placement test and got in trouble. -------------------- Mark William Rabiner Photography http://gallery.leica-users.org/v/lugalrabs/ mark at rabinergroup.com Cars: http://tinyurl.com/2f7ptxb > From: Ken Carney <kcarney1 at cox.net> > Reply-To: Leica Users Group <lug at leica-users.org> > Date: Tue, 04 Jan 2011 18:12:27 -0600 > To: Leica Users Group <lug at leica-users.org> > Subject: Re: [Leica] What are the most important aspects of a photographic > image ? > > I have willed that part out of my mind. I did make a spreadsheet with > the formulas for front and back focus (Lotus 123 in those days instead > of Excel). Here are the calculations: > http://www.dofmaster.com/equations.html > I like autofocus better. > > Ken > > On 1/3/2011 8:58 PM, Mark Rabiner wrote: >> Which circle of confusion did you pick? >> >> >> -------------------- >> Mark William Rabiner >> Photography >> http://gallery.leica-users.org/v/lugalrabs/ >> mark at rabinergroup.com >> Cars: http://tinyurl.com/2f7ptxb >> >> >> >> >>> From: leo wesson<leowesson at gmail.com> >>> Reply-To: Leica Users Group<lug at leica-users.org> >>> Date: Mon, 3 Jan 2011 20:41:38 -0600 >>> To: Leica Users Group<lug at leica-users.org> >>> Subject: Re: [Leica] What are the most important aspects of a >>> photographic >>> image ? >>> >>> Who? >>> >>> Thanks! >>> Leo Wesson >>> 817.733.9157 >>> www.leowesson.com >>> >>> >>> On Jan 3, 2011, at 19:30, Ken Carney<kcarney1 at cox.net> wrote: >>> >>>> My first photo seminar was with a Famous West Coast Photographer. His >>>> advice >>>> was ditch the 35mm and get a real camera (I think I brought an M3 and a >>>> couple of Summicrons, or maybe a Contax to the class, but definitely >>>> TriX). >>>> So I bought a nice 4x5 field outfit, a Linhof Technica and lenses, and >>>> for >>>> good measure an 8x10 rig also. The focus part was a little tedious. >>>> Once >>>> you knew the distance to the target, you pulled out a little chart for >>>> each >>>> lens that showed the range of focus for each stop, based on your desired >>>> circle of confusion. Then you measured the various zones, which gave >>>> you >>>> the >>>> key to the ISO for that shot and thus the development time for that >>>> particular sheet, based on your densitometer tests. After, of course, >>>> you >>>> had consulted your reciprocity failure chart. Sometimes it happened >>>> that >>>> by >>>> the time I made the exposure everything of interest, including the >>>> light, >>>> had >>>> vanished. Then the light bulb began to flicker on that something >>>> more...immediate...m >>> ight be appropriate. Then, Gracia Dios, along came digital and the >>> exposure >>> comp dial. >>>> Ken >>>> >>>> >>>> >>>> On 1/3/2011 6:33 PM, Mark Rabiner wrote: >>>>> I think its nice to get the thing in focus most the time. >>>>> >>>>> >>>>> -------------------- >>>>> Mark William Rabiner >>>>> Photography >>>>> http://gallery.leica-users.org/v/lugalrabs/ >>>>> mark at rabinergroup.com >>>>> Cars: http://tinyurl.com/2f7ptxb >>>>> >>>>> >>>>> >>>> >>>> _______________________________________________ >>>> Leica Users Group. >>>> See http://leica-users.org/mailman/listinfo/lug for more information >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information