This lens is an easy 5 stars. Absolutely magnificent, even if you ignore the good value. The other reviews have already said it all. I guess my one quibble is to make sure you are happy with the weight. It is lightweight for a 1.2, but it is on the limit for me as a daily carry lens.

Quite many of lenses which I bought in recent years had to be returned due to optical quality issues, sometimes very serious. Based on these bad experiences, I have started testing my lenses just after purchase.
I have tested my Voigtlander 50mm F1.2 for resolution at various apertures and focal distances. I have also made tests for decentering and coma and found no problems at all. This is not a perfect lens, many reviews I read before agree with that. But comparing it to my old Minolta AF 50mm F1.4 it wins in all fields, except for size and weight of course. Resolution across the frame seems to be only very slightly better than Minolta's resolution, perhaps better sensor than 42Mpix will be able to show Voigtlander advantage more clearly. Clarity of the picture, contrast, coma, geometrical distortion and of course bokeh is better in case of Voigtlander. Since corners sharpen up very nicely at F8, the lens is quite suitable for landscape photography, however this was not the reason why I bought it, I am more interested in exploring it's wide open possibilities.
The only thing that I don't like is the lens cap, the way in which it is attached to the front of the lens doesn't build much confidence, but this is a very minor issue.

For such a fast lens, I'm amazed at its size. Having it be such a small and light lens makes it an amazing street photography tool. Light transmission seems to be higher than other 1.2 lenses I've used making it very good at handling low-light situations. At f1.2 it does make it hard to get perfect focus, though focus peaking/magnification does help a bit. Sharpness at f1.2 is very good at infinity to about 5 feet, closer than that some glow starts to kick in, which can be a good thing depending on the application. Center sharpness at f2 is much better and f2.8 is probably peak sharpness, though you'll need to be at f8-11 to get good results at the very edges. One thing that took me by surprise was the color this renders. Its way more saturated than my other Voigtlander lenses and It's basically that Zeiss pop but more saturated, and it looks amazing. The usual Voigtlander qualities I've come to love is the build quality and the functionality. Its built like a tank (feels dense) and has a very smooth focus ring with a nice clicky aperture ring, which can be de-clicked using the ring in front of it. Although my 65mm and 110mm Voigtlanders are much sharper, they can't replicate the rendering and color saturation this lens has as well as the smooth bokeh. Overall a real artistic gem.

I tried the 7artisans before this, and there is no comparison on the quality of the build. this is more expensive but it's a serious manufacturer whereas 7Artisans lets the calibration to you. Great at 1.2, but super sharp at 4 and so on. Great for night and portrait, nice contrast and sharpness but soft enough at 1.2. Small and light foes well with Leica or Sony A7 line.

Super well built, DENSE (it's smaller, but heavier than my Zeiss Batis lenses) and a joy to use. I actually like having the aperture towards the front. A little known fact, but you can easily de-click the aperture by pressing in and turning a ring next to the aperture! The manual said nothing about that.
Super sharp at every aperture except 1.2. At 1.2 it's usably sharp, but slightly hazy, especially when close-focusing. Been enjoying it for general food photography and some portraits.

This lens is beautifully built and renders beautifully as well. I like the gnurled focusing ring. Aperture clicks are distinct and sure. Bokeh in the right conditions is very beautiful. It's nice to have a few extra stops in the bag at a much lower cost than comparable Leica lenses. I have never shot the Leica equivalents, but imagery from them is beautiful and with the price difference, I don't think the Leica alternatives will outperform this lens to an appreciable degree.

This is quite a well-made MF lens. An extremely smooth focus ring will provide you an amazing experience. As many reviews pointed out, wide open does not provide you the great sharpness that you may expect from the modern lens. However, it renders dreamy so you will be impressive when it comes to the portraits. If you use the value of the aperture more than F/5.6, the lens will give you very sharp images and fully utilizes the potential of A7R 1, 2, and 3. I highly recommend this lens to someone about to forget how fun photographing was. :)
Plus, I have never regretted making purchases of items related to photos from B&H photos. The quality of the CS is very satisfactory.

Everything that I read in the PhillipReeve review is true.

This lens is an outstanding piece of optical engineering. Very smooth bokeh, very clear images throughout the aperture range. At f/1.2 there is a hint of softness. Stopped down to 1.7 and smaller the images are nicely sharp, razor sharp by f/2. The lens system works seamlessly with Sony focusing features such as magnification assist (as soon as the focus ring is rotated in the least) and focus peaking. The aperture de-clicking mechanism is easy to enable and stays locked in the selected position. Very well built lens with exceptional character.

Manual, not the sharpest wide open and imperfect bokeh balls.

And that's ok.

There's the Sony 50/1.2 GM for pixel peepers.

Voigtlnder lenses are about 1) experiencing photography and 2) unique, recognizable optical characteristics.

If the Sony 50 1.2 GM is a Bugatti Veyron unleashed in the Autobahn, the Voigtlnder is a convertible, manual Jaguar E Type cruising through the Alpenstrasse.