Archived posting to the Leica Users Group, 2005/04/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Nice, but I like this one even better: http://www.faneuil.net/2004/slides/01.html > From: eric <leica_korenman@hotmail.com> > Reply-To: Leica Users Group <lug@leica-users.org> > Date: Wed, 13 Apr 2005 06:24:31 -0400 > To: Leica Users Group <lug@leica-users.org> > Subject: Re: [Leica] Macro Comparison Leica V. Yashica > > just my 2 cents - trying to reuse an old image I guess: > 100 macro elmar wide open: > http://www.faneuil.net/2004/slides/05.html > (warning: artsy shot of crying kid) > > Eric > > > ----- Original Message ----- > From: "Mark Rabiner" <mark@rabinergroup.com> > To: "Leica Users Group" <lug@leica-users.org> > Sent: Wednesday, April 13, 2005 1:11 AM > Subject: Re: [Leica] Macro Comparison Leica V. Yashica > > >> On 4/12/05 9:33 AM, "Douglas Sharp" <douglas.sharp@gmx.de> typed: >> >>> Hello everyone, >>> >>> Only one third Leica and no Rollei at all. It may , however, be of >>> interest to those of us who like optical excellence whatever the source >>> may be. >>> >>> >>> 2 full-frame shots: taken with a Macro-Elmar 4/100mm and a >>> Yashica ML 2,8/55mm Macro both at f8, Canon 20D at ISO 100, tripod >>> mounted, daylight. >>> >>> http://gallery.leica-users.org/album150/Leicaf8_full_frame >>> http://gallery.leica-users.org/album150/CY_full_frame >>> 2 centre crops from the same shots >>> http://gallery.leica-users.org/album150/Leicaf8 >>> http://gallery.leica-users.org/album150/CY_f8 >>> >>> I think that the resolution of the Yashica is superior but the clour >>> rendition of the Leica is better (richer). >>> Just to make sure that the lenses were comparable they were both >>> cleaned, front and rear elements, before taking these. >>> I ran the test through 5 times and got the same results for f8 and for >>> other apertures, refocussing each test series to eliminate any possible >>> focussing errors, and picked the best of each run. Maybe I got a duff >>> Elmar, this difference in quality is surprising to say the least. >>> Cheers >>> Douglas >>> >>> BTW it's a Miners Safety Lamp >>> >>> >> >> >> Boy oh Boy Doug and yous guys! >> >> The thin plane of focus on the macro Elmar shot is at the far right edge >> of >> the frame. >> Its certainly to the right of the "S" of "lamps" and the "8" of the " >> B/28" >> I'm not even sure that true point or total plane of focus is even IN the >> frame. >> It just might be on the right half of the "8" itself but my hunch is its a >> tad in front of it. Towards us. >> In the air. >> >> The focus with the Yashica shot is further left on the "P" of "lamps". >> The "m" is behind the plane of focus >> And the "S" is in front of it. >> >> So if we then look at THAT area in the macro Elmar shot we think its >> "sharper" then the macro Elmar. If we didn't look at the rest of the shot. >> It's not where the very narrow plane of focus IS on that shot. >> It's way to the left of it by the distance of 2 or 3 letters or numbers in >> the shot. >> >> The DOF in such a shot is about an 8th of an inch as we can see. >> a shot on a curve like this illustrates such a thing. >> >> I cant believe this crazy test has got all you guys fooled! :) >> >> On a test like this you'd have to bracket your focusing to make them both >> match up. But it could easily be done with some bracketing. You barely >> breath on the lens to change the focus by several millimeters. You just >> look >> at it funny and it will shift a full letter over. >> :) >> >> >> >> Mark Rabiner >> Photography >> Portland Oregon >> http://rabinergroup.com/ >> >> >> >> >> _______________________________________________ >> 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 >