Archived posting to the Leica Users Group, 2001/10/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I notice the shadows, the middle seems very soft. It seems that your 75 lux a little bit out of focus. But I am not really sure, is it because of the bokeh or focus problem? JSJ - ----- Original Message ----- From: "Rei Shinozuka" <shino@ubspainewebber.com> To: "Leica Users Group (LUG)" <leica-users@mejac.palo-alto.ca.us> Sent: Monday, October 15, 2001 6:00 PM Subject: [Leica] 75 lux performance > > http://www.shinozuka-family.com/20011014test/ > > over the weekend, i evaluated a 75/f1.4 M which appeared to be in mint > condition. i was a bit dissapointed in wide-open performance, and wondering > if it might be a bad sample, or need a CLA or something. highlights seemed > ghostly, and the image seemed a tad more soft and low contrast than > i would have expected from this lens. i'd really appreciate > the advice of 75M owner if my findings are representative of the 75M. > > i'm particularly surprised because the 90 cron seemed as good or better > at equivalent stops and i've certainly read more about the performance > of the 75 lux than the pre-AA 90 cron. > > i set it up on a gitzo 1228 tripod pointing at the shed in my backyard on > an overcast saturday and shot it wide open, f2 and f4. i also shot > alongside with a gen III 90 cron (latest pre AA version) and 35/1.4 ASPH. > i moved the tripod for the 3 lenses to get approximately the same angle > of coverage. film was Fuji ACROS exposed at EI64 and developed in XTOL(1+3). > > i posted magnified sections to: > > http://www.shinozuka-family.com/20011014test/ > > each of the squares is 400x400, representing about 3.6mm x 3.6mm sections > of the neg, scanned at 2820 dpi. its arranged such that > every row is at the same f stop. > > do you guys think the top middle one is good performance? > > thanks very much! > > -rei > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > > - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html