Hee Hee... great answer Nick, love it.... true too, sometimes I wonder where these misguided opinions come from, not from experience methinks.Oh for goodness sake.... inexpensive glass that usually needs a lot of in camera corrections.
The glass is fine. The corrections are for barrel and chromatic distortion which is nothing to do with the glass quality. Digital corrections are part of the system design to enable very good quality pictures to be taken with small, well designed lenses. Correcting barrel and chromatic distortion optically involves compromise, weight, and cost, and does not produce as good results unless you want to spend a lot more money on one lens.
Let's screw our heads on here and see the system for what it is, not what it should be in some fairytale anally retentive perfectionist universe.
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Phil
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http://matix.zenfolio.com