When comparing the 4/3 version of the Summilux 25/1.4 to the old standard Canon EF 50/1.4 I would say they are about the same at the equivalent aperture openings. Stopping down further, say to f/5.6 or 8, the EF 50/1.4 is sharp or even critically sharp all over the frame, something the 4/3 Summilux 25/1.4 can\'t do.
I now have the micro version of the 25/1.4 and without having done any controlled test of it I think it is about equal to the 4/3 version.
Comparing the lenses at the same f-stop is no contest really; the 25/1.4 wins wide open as it has much less aberrations and is sharp over a, relatively, larger area than the 50/1.4. Comparing this way the 25/1.4 also wins against the excellent Sigma 50/1.4 and probably also when matched against the new Nikkor 50/1.4G. I haven\'t tried the Nikkor myself and can\'t say for sure.
In any case, the comparisons described above are pretty much meaningless. I\'m just happily settled with the fact I very often can stay at base ISO and get sharp images with a decent DOF using my old G1 with the Panasonic 25/1.4.
Apr 03, 2012 at 05:10 PM
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