I've used SLRs since the '70s and digital cameras since last century.
I have a Pentax *ist and 4 Pentax lenses - fisheye, ultrawide,
'standard' and long.
All four are zoom lenses and are sharp with very little chromatic
aberration at any focal length or aperture.
For recent examples:
<http://www.henniker.org.uk/html/recent.htm>
For some fisheye pictures:
<http://www.henniker.org.uk/html/leith16.htm>
Never again will I mess about with chemicals in the dark!
Best wishes to all, regards Dave.
<http://www.henniker.org.uk>
3000 photos especially
Edinburgh & Scotland. + 3D rendered art, old ads etc.
Délété david for email; watch the spam filters.