Resolution of M43 lenses

Started Mar 31, 2013 | Discussions thread
exdeejjjaaaa
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Re: I disagree
In reply to MAubrey, Apr 2, 2013

MAubrey wrote:

exdeejjjaaaa wrote:

Anders W wrote:

Dr_Jon wrote:

At the wide end of my 12-35 it needs a lot of correction and the Photozone results do show the centre sharpness is a long way above the edge at all apertures at 12mm, but whether that's software correction or the edges of the lens just being not-so-great in comparison to the centre I have no idea.

Exactly. While we know that the resolution of the 12-35 after distortion correction is worse than before, we can't know whether the end result is better or worse than it would have been for a lens designed so as not to require any software correction. Correcting one aberration is frequently at odds with correcting others and improving distortion characteristics by optical means may well come at the expense of lower resolution.

really ? take a peek @ olympus 12-35/2 or 35-100/2... optical correction adds weight, size and cost+price... but it always better than software correction just because you can always apply the same math on top of that... you don't have any single example of a properly optically corrected lenses (distortion and aberrations) that leads to reduced resolution... just FUD to justify underdesigned lenses to save on size/weight and cost to sell more.

Not true.

Every time you add a new element

no, no... don't cheat here - correction is not equal to always adding a new element - you can just use a proper material (more expensive that is)... / oh, and what about your double magenta filters ? I heard you did not notice any ill effects, did you ?  /

to correct one thing you risk "uncorrecting" another thing. In this case, the Olympus 35-100mm f/2 has massively worse flare compared the Panasonic 35-100mm f/2.8 http://www.lenstip.com/242.9-Lens_review-Olympus_Zuiko_Digital_35-100_mm_f_2.0_Ghosting_and_flares.html

http://www.lenstip.com/368.9-Lens_review-Panasonic_G_X_VARIO_35-100_mm_f_2.8_P.O.I.S._Ghosting_and_flares.html

Flare problems are particularly bad with these kinds of zooms, but the super high resolving Olympus 35-100mm f/2 is particularly horrible. And flare, incidentally, really hurts resolution.

flare hurts contrast (acuity), not resolution... and I will take more flare over crippled optics, because I do not shoot towards sun and w/o hood (that was a condition of experiment)... your mileage is different apparently.

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