What's strange to me is that it waits so long at 45 cm before it returns to infinity. Mine just touches the mfd and focuses to infinity right a way. but the actual speed when it's turning is the same as mine.
The actual focusing speed isn't that different from the 1,8, seriously. It's noisier and useless in poor-light, but af-speed between the 3 50's isn't that much. The accuracy is a hole other story.
And if you're used to crap then this af may seem fast, but for the OP and me and all the other people who use the 24 L II , 24-70, 70-200 mkII, on a daily basis, this is slow. Yeas the 85 is way slower, but that's one of the horror examples of slow AF, but I own one and although it's slow, it's not too slow for it's uses and the accuracy is VERY good.
50 L is one of the greatest ever. B-e-a-utiful bokeh and so much sharper at 1,2-2,0 than the other 50's it's a laugh. If anyone starts another tread and getting the reply, "it's not worth it , the 50 f1,4 is much better value and almost the same IQ" If I see that, I'll be trolling them forever....