07-15-2010, 10:07 AM
[quote name='zz7' date='15 July 2010 - 10:37 AM' timestamp='1279186653' post='1019']
However, let's simplify discussion to following situation: let's assume that I shoot only landscapes on infinity focus. Would not the manual focus lens (where focus ring turned to the edge means infinity) simplify my life and reduce number of technically flawed images (due to autofocus errors)?
Thanks,
Alex
[/quote]
Hi,
My Voigtländer 40/2 isn't very accurate in that regard - it seems that the 'infinity' setting is not actually infinity. The Zeiss 21/2.8 however, is extremely accurate and child's play to focus. You can literally set that lens to F5.6/5m and use it like a Lomo. The Zeiss 85/1.4 and 50/2 are also very good, sharp lenses and admirable for landscape work - and although I might believe they are superior to Canon/Nikon lenses in some respects, the differences are quite small. And plenty of people would disagree with this assertion, anyway.
Also, one would assume you won't always want to focus at infinity. And, as has been said, you can use an AF lens in MF mode, so it's just a matter of turning AF off. At the end of the day, using a tripod, spirit level and live view will probably improve optical errors to a greater extent than a shift to MF lenses.
However, let's simplify discussion to following situation: let's assume that I shoot only landscapes on infinity focus. Would not the manual focus lens (where focus ring turned to the edge means infinity) simplify my life and reduce number of technically flawed images (due to autofocus errors)?
Thanks,
Alex
[/quote]
Hi,
My Voigtländer 40/2 isn't very accurate in that regard - it seems that the 'infinity' setting is not actually infinity. The Zeiss 21/2.8 however, is extremely accurate and child's play to focus. You can literally set that lens to F5.6/5m and use it like a Lomo. The Zeiss 85/1.4 and 50/2 are also very good, sharp lenses and admirable for landscape work - and although I might believe they are superior to Canon/Nikon lenses in some respects, the differences are quite small. And plenty of people would disagree with this assertion, anyway.
Also, one would assume you won't always want to focus at infinity. And, as has been said, you can use an AF lens in MF mode, so it's just a matter of turning AF off. At the end of the day, using a tripod, spirit level and live view will probably improve optical errors to a greater extent than a shift to MF lenses.