Yes, I do agree that aside from the focus shift (see I pay attention sometimes and learn, for awhile at least) issue, the 50 1.2L is a better lens, but, for me, having to second guess and compensate for that focus shift, which in effect, causes a focus error, is enough of a problem that I consider it a flaw. That they can do an 85mm and 35mm that doesn't have this behavior, suggests that it wasn't inevitable, and to me, implies either lazy or short-sighted design. To be fair, yes, if you're shooting father away, the difference is diminished, as the depth of field, in an absolute sense, is deeper anyway. However, I like getting close sometimes, so it's not acceptable for me. I do miss the quality of the bokeh, but not enough to repurchase the lens giving the focus shift fault. Just not interested in having something that defective to deal with. I've gotten great shots I liked using this lens, and have also lost some because of the focus shift. But, I have to concede, the other advantages you point out are real, and for some people, worth the hassle.