[Brightcolours]

So according to Klaus it looks like this zoom at it's best "easily exceeds the potential of the 36MP sensor"

And so it looks on the charts.

 

But according to DXO it provides, at it's best, 16 PMP - perceptual megapixels, their own made up measure. Which they take to be very good for a lens like this.

 

Now maybe 16PMP is the most you can hope for on a 36 real mp sensor: except that the Zony 55 1.8 peaks at what looks like a massively higher 28 (I think) PMP.  So it seems like there's a lot more potential on the 36MP sensor.

 

So what's going on? I'm confused....

DXO is what is going on. For fun, take a look at the Canon EF 17-40mm f4 L USM and Canon EF 16-35mm f2.8 L USM II "tests" from DXO. Prepare to get confused even more!