The Sigma 135mm f/1.8 Art is one of the longest telephoto prime lenses I have ever shot photos with. During this first photo walk with the new lens I had to take a couple of steps back a number of times, because I was to close and more than half of the motif was missing. 🙂 It should be obvious that 135mm on APS-C format is not short at all.
The lens is, as you would expect going by the specs, is large and heavy. The latter is also the result of it being built like a tank. Even though it’s too early to form a definite opinion, it seems to me that this lens is if not the sharpest then at least one of the sharpest Sigma lenses I have ever had the pleasure of taking photos with. Just go to Flickr and take a look at the images in full resolution and you will immediately understand what I’m talking about. It’s as sharp at f/1.8 as many lenses are in their sweet spot aperture range (which for fast primes is mostly between f/2.8 and f/5.6). I’m really taken by the sharpness as well as bokeh of this lens and can’t wait to take it for another photo walk.