I positively hate the negs from my pentax 28-70FA and no longer use the camera. I thought sooms were poor until I use even the relatively cheap 28-135 canon IS. Totally different league, esp as I can use the IS to drastically reduce camera shake, this being such a major and often overlooked factor in image sharpness. I would think that the Canon and similar pro series lenses are stunning and the charts bear this out. Zooms today are not the same as zooms even 5 years ago.
Originally Posted by Bob Carnie