I am looking for a good zoom lens to invest in.
There is a whole literature out there on 18-200mm, 70-300mm (2 types !) etc.
And there are differing views on whether 3rd party lens are better than original vendor lens.
I am using a CANON EOS 500D camera now, and I already have a 18-55mm kit lens and a F1.4 50mm prime lens.
Appreciate some advice here.