[Brightcolours]

If those sample would be a base to decide, not many would buy this lens.

It is not a lens for many. It is a lens for professional artists who know the value of this lens for their work.

Nice bokeh, but so far I haven't seen one picture being in focus. We're used to adjust the AF

Adjust the AF?

and then we're done and can set proper focus even out of center. So, what good would be a screen with a center focus help for shooting wide open and/or moving objects?

Obviously this lens is not designed to be used as sports lens. Come on. If you can't figure out which kind of photographer this lens is for, then it certainly is not a lens for you. Does not mean that others don't know what it is for.

This lens is challenging all AF users or readjusting them to shoot stable immobile objects with tripod and LiveView.

This lens is NOT for the hobby-ing snap shooter. It is for serious photographers/artists who understand its value. Not a lens for the masses.

Who needs a fast lens? What to do with it in dark conditions?

Aperture is for DOF control. Exposure time and ISO are for exposure duration control.

Concerts? Ballets? Theatre? My purse just regained breath   no danger to buy it.

If you can't figure out what this lens is good for, it is not a lens for you. As so many lenses are not for you. Does not mean it is not a lens for others....