But if you asked me to choose ONE lens for my travel/adventure projects, the 70-200mm is a no-brainer for me. Let's talk about why! Grab one for yourself, here - Sony 70-200mm f/2.8 GM - <a href ...
At 70mm, central sharpness is excellent at f/2.8, outstanding at f/4 and excellent from f/5.6 to f/11. It is still very good at f/16 and good at f/22. The edges are excellent from f/2.8 to f/11 ...