In article , Chris Blunt
says...

There was silly me thinking that things like lens quality could be an
important factor. Thanks anyway for answering my irrelevant question.

Yes, lens quality does matter. But for most camera brands there are good
lenses (at a certain price level). In addition, current image processing
software allows to correct to a certain extent lens imperfections such
as chromatic aberrations, geometric distortions and vignetting.
--

Alfred Molon
http://www.molon.de - Photos of Asia, Africa and Europe