This is Canon’s longest zoom lens and is categorised as one of their L range. The lens has been around for some time now, earning itself a somewhat mixed reputation amongst digital photographers that ...

Sharpness at 70mm is excellent in the centre from f/2.8 through to f/8. It is very good at f/11 and f/16, good at f/22, and only at f/32 does diffraction really get a grip and here it is only fair.