Using it without a tripod will result having a camera which will be not exactly a "keeper": you will have sharp results on still objects in AF-S and moving objects in AF-C but you will lose shots depending on your hands shaking

A prime lens gives you brilliant results in most kind of condition; this lens has to be mastered and if you understand how to use it you can definitely have sharp result

On one hand Dxomark registered very sharp results at wider angles and f11 and the lens is capable to keep it sharpness till 50mm at f/11 especially in the center of the frame, while, zooming in the lens start loosing sharpness

This means that the amateur photographer willing to have brilliant results on Auto will be disappointed

It gives me a tremendous range of use without having to swap lens (thus avoiding polluting glass and sensor), and a zoom that produces great results.

The only one reason I would suggest to use this lens on a Sony A6000 or 6500 is because the issue related to sharpness is at the edges of the lens, but with a crop factor of 1.5 you are most likely to cut off the edges and have sharp result

Other than the focus issue which seems like about a 1 in 10 shots issue, I'm getting very sharp results at all apertures.