Lens at BHphoto and Venuslens.net (worldwide shipment).

Here is Marc Alhadeffs take on this lens:

Build quality is top notch , weight (580g) & price (500$) are quite high for an APSC lens

The sharpness is already good wide open with a good contrast. Corners are weaker than the centre as expected but their behavior is but much better than on the 7 Artisans 35mm F0.95 or the Mitakon 35mm F0.95 Mark II, which make the Laowa more versatile than its alternatives

The Laowa 33mm F0.95 will be excellent for portraits and objects details, with a beautiful rendering for skin tones, good sharpness wide open and creamy background blur, nice bokeh balls; at F2.8 the lens is tack sharp.

It will be also ideal for street photography when you want to isolate your subject and have the rest of the street in the blur (very nice 3D effect). For photography in dark situation it’s F0.95 will help not to increase too much ISO, but pay attention to direct light sources has the resistance to flare at f0.95 is weak with big halo effect.

Alternatives

• The 7 Artisans 35mm F0.95 : 250$ is a budget lens providing similar sharpness in the centre, same creamy background blur and excellent color rendition at half the price and a much lesser weight. But this lens exhibit much more color fringing at F0.95 and has much weaker corners
• The Mitakon 35mm F0.95 Mark II (600$) is not a bad lens : it has similar sharpness in the centre and nice background blur, but its show its age with weak corners, some color shift and much less good color rendition

Globally the Laowa is the best 33-35mm F0.95 for Sony APSC camera

Opticallimits reviewed the Samyang AF 85mm f/1.4 FE lens and concluded:

The Samyang AF 85mm f/1.4 FE has been substantially improved compared to the older DSLR variant. The resolution is still not impressive at f/1.4 but fit-for-purpose if you intend to use it for portraits. You just may not want ultra-sharp results in this case. However, if needed the Samyang can give you that when stopping down a bit. The quality is already very high at f/2 and downright great at medium aperture settings. Image distortions are a non-issue even in RAW files. Typical for such lenses, the vignetting is a bit on the high side at f/1.4 but most users will probably rely on auto-correction which reduces the light falloff to an acceptable level. From f/2 there isn’t anything to worry about here. Lateral CAs are low. The same can’t be said about axial CAs (LoCAs) which can be very pronounced in certain scenes. Axial CAs are very difficult to remove in post-processing. The quality of the bokeh is pretty good overall. The general quality of the out-of-focus blur is pretty silky, especially in the critical background. Out-of-focus highlights are very nicely rendered in the image center but the circular shape is falling apart rather rapidly beyond.
In terms of build quality, it is the best Samyang lens that we tested to date – the metal body feels very sturdy and Samyang implemented some degree of weather sealing. An internal focusing mechanism is also maintaining a constant lenght throughout the focus range. The AF is not the fastest around though. It has to shift quite some weight due to the heavy glass elements but there’s room for improvement here. The rather noisy aperture mechanism isn’t ideal either.
The few weaknesses have to be balanced with the price tag of the lens and the Samyang AF 85mm f/1.4 FE is hard to beat in this respect – a true value king.