It’s true, with the release of this Sigma, all photos taken with inferior 50mm lenses, particularly the 50L, will be rendered unpresentable, absolutely dreadful.
Or…most modern lenses are very good—-for that matter, most older lenses are too.
Some offer different things, like autofocus for some people or aperture rings for others (like me), but in the end, it’s what the photographer finds sufficient for their needs or wants that matters.
Choice is always good, so plaudits for Sigma offering another option, apparently combining high quality with what some apparently consider a reasonable price. And from some of the reactions that I’ve read on this thread, I reckon Kleenex should also be happy with its associated surge in sales as well.
But in the end, I’m quite confident that I can still find a number of excellent photos taken with a 50 f/1.8.