when compared to a PRO lens? I mean, looking at the price difference between, say a F2.8 70-200mm and a f4.5/5.6 70-200mm, does the images produced by the latter really inferior to the former?
If it only offers barely noticeable image quality differences, then what is the impetus for buying a PRO lens, considering the big price premium one has to pay to get one?
p/s: I assume PRO lenses means all those with F2.8 and smaller f stops right?
Sorry but I am really a newbie to this lenses thingy