GMPhotography wrote:
The ZM by itself hits the corners at F6.3 and the CV from memory not until F9. Both very nice lenses though.
No offence but who cares?
If you are shooting scapes f9-11 is where it's at just to get enough dof. Who cares about corner sharpness at f6.3?
For me that pixel peeping sharpness difference at extreme corner is absolutely irrelevant and makes zero impact in real life usage. I take smaller, lighter lens at less than half the price.