Samuli Vahonen Offline Upload & Sell: Off
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Doug Morgan wrote:
I've never actually used the 85L and the TS-E isn't really meant to be used wide open so a comparison at F2.8 is pretty meaningless though I'm sure any of the fast primes would be much sharper at F2.8.
Why to test at F2.8. I asked this since I had once an opportunity to borrow 85 f1.2 (mark I) for couple hours and the microcontrast / small detail was from different planet compared to 85 f/1.8 (both closed down). I would love to get 85L for landscapes (and for everything else as well within that focal length), but I find 85L too expensive. Specially since I'm quite happy with 85 f/1.8 on close-up/mid-distance photography, it has nice edge contrast but small details seem to be missing. Also Canon EF 100 f/2.8 USM macro has good image quality on close-ups and mid-distances, but seems to be optimized for those and I'm personally not satisfied to 100macro in landscape photography.
Doug Morgan wrote:
The lens certainly would not have trouble resolving leaves at 20m.
Yes Canon's can resolve the leaves (Canon's usually have good edge contrast) but I'm looking for lens which resolves the small details in the leaves like Contax/Leica lenses which I now have been able to test. This makes a difference in bigger prints, I today printed some of my test photos to 11"x17" (or whatever A3 is called in USA, anyhow about size of two letter size papers combined) and the small detail on leaves, rocks, etc. made the prints very nice looking even printed with office laser printer 
dcmiller wrote:
Not sure what the issue is with focus. First, you're looking at some manual lenses, and second, landscapes aren't moving and autofocus is generally unimportant.
Sorry if I was a little unclear - I already had that lens and generally D30 and 20D were not focusing accurately with 70-200L4. However this has nothing to do with landscapes, but I use my lenses for other purposes as well and constant random missfocusing, specially at wide end, started to get my nervers and then I changed all my important lenses from zooms to fast primes. I just don't want to purchase the 70-200L4 again even it would be possible to focus accurately when my KatzEye prism split focus screen arrives.
And yes landscapes do not move - but even in "infinity" (200m isn't infinity...) accurate focus is important on large prints, the center of depth of field is always sharper than the border areas of DOF. With 70-200L4 lens focusing to infinity (or for example 50 meters) isn't that easy since infinity focus is achieved a little bit different focus setting on tele and wide ends (can't trust the focus window readings) and aufofocus can be way off and still 20D things that focus is within DOF and without split prism manual focusing is almost impossible.
So hopefully you now understand my comments regarding 70-200L4. Also if I remember correctly 70-200L4 had very nice bokeh, excellent contrast but when I made some tests against primes replacing it (85 f/1.8, 100 f/2.8 macro, 135L, 200L) it wasn't as sharp as these primes at any aperture.
I do understand your point that tilt/shift is good functionality in landscape lens. Also shift makes easy panoramas (very wide/tall format or square format) with high megapixel count possible. I finally received my PC-Nikkor 28 and 35 and even they must be much lesser quality than 90 TS-E (or 45 TS-E) and still I found out creation of high megapixel images very easy and the seam between two images was quite easy to hide even on boring test pictures of my hotel room's wall...
Also thanks for a good point that upgrading to full frame would give enourmous benefit but personally I don't want to do it now - I try to wait until new model and then purchase used 5d or the new model. Hopefully Canon could get rid off the antialiasing filter as well. My goal has been to get set of lenses which will work well in fullframe also. Based on MTF charts 85 f/1.8 has very poor corners on ff and is definetly first to go when I purchase fullframe camera. The small-dof close/mid-distance replacement is easier to find, for example Contax 85 f1.4 is quite often sold in eBay with quite decent price and will perform very well on that kind of photography.
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