Archived posting to the Leica Users Group, 2005/10/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>False alarm. > >I set up a tape measure and took a few shots of it from about a 45 >degree angle at f1.4 (100asa). >My reference shot for sharpness was a shot taken at f8,which should >be the sweet spot for the lens. >It showed the 2ft mark clearly in focus. > >At f1.4 I saw: > >First I tried it with the AF, doing it's thing. The two foot mark >was in focus with the numbers to it's left and right gradually >getting softer. Looked pretty good. > >Then I set the camera to motordrive and as it hammered away at 3ps, >I very slowly racked from out >of focus in front of the 2ft mark to out of focus beyond it. One of >the frames at 2ft was as sharp as what >I was getting from just the AF. > >Then I tried to manually focus the lens. I managed one frame that >was marginally sharper than the AF, >but could not repeat that. > >So, I'm going to draw these conclusions. > > >The AF is only so accurate. > >The camera may just ever so slightly front focus. > >The 1.4/50 is no Summicron. I think I needed a Leica-R to Canon adapter... > >The AA filter is killing some micro detail. Once you sharpen up the >RAW files they become crisper. >This would also explain why in tests, the DMR and Nikon 2DX appear >to have a little more snap. > >It sill is a very nice camera. > >Feli Feli, do you use Photokit Sharpener? Give it a try if you haven't yet. It will show you what detail the 5D is capable of. The detail is there. -- * Henning J. Wulff /|\ Wulff Photography & Design /###\ mailto:henningw@archiphoto.com |[ ]| http://www.archiphoto.com