My Sigma 50mm 1.4 has been kicking around my camera bag for the last 4 years. They call it a nifty fifty and this was a nice one too. But it always bothered me that the auto-focus would hunt around and never seem to lock on just right like my Nikkors did. The manual focus ring was also stiff and unfriendly, so over the years I tossed it aside and it sat in my bag waiting for those dark churches that were infrequent at best. I figured that this was what you got for getting a Sigma even if it was just shy of $500! But it is a 1.4 and a lovely and huge piece of glass. I’m also a bokeh junky so on it went and off with the zooms. Tonight was one of those evenings where on it went and to my surprise I love everything it gathered. P.S. – if you have this lens try setting your auto-focus to “long” as this seemed to help with the hunting, jittery auto-focus. Cheers!
Below are some images from a DX sensor. Cropped making the 50mm equivalent to about 85mm.