This is my first Zeiss lens and I must admit I rather like the build quality and the focus ring is buttery smooth. I can't imagine a Leica lens is better than this but I'm open for opinions. The reason I bought it was for the simple reason I wanted a nice 50mm lens for the full frame sensor and not one of the older legacy lenses. This is a quality lens that delivers really nice images and the signature is instantly visible. The reason for not buying a quality 50mm from Leica was simple: cost. I just can't justify that sort of outlay for one lens and the Zeiss comes in at a very reasonable cost. I didn't need anything faster than an f2.
I've been playing around with the Voigtländer Nokton 35 f1.2 II at f1.2 and boy, do I need to get some practice in. If you haven't been using a fast lens on full frame before I must warn you it's totally different than using one on an APS-C sensor. It's much more difficult to get critical focus in the right place. I've only been able to nail the focus correctly probably only 25% of the time. I must now take my hat off to Steve Huff for getting the images he does, but then again, he's been doing it a lot longer than I have and I'm sure there's something in practice makes perfect. I'll be showing a couple of images in my daily posts, so stay tuned.