[Brightcolours]

But surely the Poor / Fair / Good / VG / Excellent bars are for just that - making the (rough) comparison between the behaviour of different lenses on whatever systems? So long as I'm not trying to compare numbers, I guess I'm fine by just gauging the bar heights and getting an overall impression of the unit's performance.

 

P. S. I was thinking that this scale is a little misleading, because the part of the scale labelled "Good" may actually stand for quite soft - unbefitting a central performance of any semi-decent lens for sure. Thankfully there have been very few lenses with less than VG central performance wide open (in case of zooms, at least at most focal lengths...) The two that come to mind are the Canon 50/1.2 L and the Nikon 24-85 D.

We are discussing that you can't really compare the bar heights in case in case of the 5DSR (and to lesser extent the A7R II)due to the sharpening (and IMO the lack of AA filter).

 

The Canon 50mm f1.2 L USM can be used wide open without problem. That should tell you something?