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I got the CZ lens right before you labelled them, on the neutrals and colour balance. All three are certainly sharp enough.
The Oly colour palette is an acquired taste I am thinking, because they are quite popular. I see weak yellows, poor overall separation in the tree colours, poor red-brown separation (path and lumpy object next to the 2005 sign), magenta sky (dust bunny there).
Shadows tend to blue more readily. Eyes have to work harder to read the main text: 'In memory of'...The tree at the back right looks entirely unconvincing after the CY image. The flag looks unconvincing - the colours are candy-like. Neutrals are very 'clean' - again, unrealistically so. I think macro contrast is at work here, undermining the image...see also the flagpoles.
The CY does them just right, more subdued in tone. The CY shows much better depth in the background, more objects appear in focus, due to better midtone contrast maybe.
Highlights on the front of the main tree in the CY lens just sparkle outwards - very nice. The path looks a consistent colour on the CY, the Oly path shows dappled sun sections as blueish and murky.
OK, the top image - the acclaimed 28mm AIS: the sky is more even toned than the Oly, but still looks flatter and darker than the CY - less tonal separation. Reds look a little too strong, saturated and a little murky. Worse, greens are contaminated by the red response. Neutrals are also affected by this response characteristic, and even some shadows are red hued, as is the grass in the park. Some of this is from it being the last image shot in the sequence - and it is also a little darker. Very sharp though, and I would much prefer to work with it than the Oly.
I don't want to mention 3D, but lets say I would rather take a walk in the Zeiss image than the others ;-) But this is on a mid range uncalibrated monitor - the 24" Wuxi will no doubt show much more...
Thanks again, Kent.