Considering the cost of the f/2.8 GM version, it makes the 16-35mm f/4 look quite an attractive proposition. For more options have a look at our lens top lists which feature optics we've reviewed ...
At 16mm, central sharpness is excellent at f/4, outstanding at f/5.6, excellent from f/8 to f/16 and very good at f/22. The edges are very good from f/4 right through to f/16, becoming soft at f/22.
I am OBSESSED with my 16-35mm for travel and adventure photography, but as an f/2.8 lens it's certainly heavier than I usually want to carry around in my bag. That's why I was THRILLED when Sony ...