Selling my absolute sharpest lens: this Sigma ART series 135mm f/1.8 lens. Tack sharp, perfectly reliable and repeatable focus, minimal chromatic abberation, built like a tank -- much better than even my Nikon G-series lenses. Only reason I'm selling it is that I've switched to a 105mm f/1.4. The reach is a little too long for what I use it for (motorsports/event candids). If I were shooting portraits and weddings, I'd 100000% recommend this lens. It's beautiful. Perfect shape, cosmetically and mechanically. Zero issues. Perfect glass. Not even any internal dust. I've only used it for the past 2 months, on two occasions. $850 price is firm unless you can show me a listing for this lens at a better price, in which case I'll beat it. Sorry, no box or accessories included, just what's shown here.