Sony
Zeiss 24-70mm f4 FE on the Sony A7 and the Sony Zeiss 16-70mm f4 on the
Sony A6000. As my third camera is infrared converted you can see deeper
into the lenses than normal.
At f/8 I would really expect things to
even out in favor of the cheaper lenses, and they do. Even at f/8 the
PZ16-50 and Sony Zeiss 24-70mm have visible vignetting.
Bottom left corner at 16mm f/8
The little PZ16-50mm really comes into its own at f/8.