After the Laowa 60mm f/2.8 Macro 2:1 and the Laowa 15mm f/4 Shift Macro 1:1 lenses, the Chinese company Anhui Changgeng Optical Technology Company Limited, better known as Venus Optics (see www.venuslens.net/about), will announce shortly a new 24x36 lens: the Laowa STF 105mm f/2 (T/3.2).
Update: the lens is now available for pre-order.
The Laowa STF 105mm f/2 is a portrait lens with an apodization filter that gives a more progressive and velvety bokeh than an ordinary lens (STF stands for Smooth Trans Focus). This is the same principle as for the Minolta AF / Sony 135mm f/2.8 [T/4.5] STF and close to that of the Fujinon XF 56mm f/1.2 R APD. The Laowa has the advantage over the Sony of being one EV brighter. Hereafter its main features:
Laowa STF 105mm f/2 lens MTF chart:
Laowa STF 105mm f/2 lens design:
Few sample photos are available on flickr:
You can find more details and many pictures taken with the lens on two threads from the Chinese forum Xitek: link 1 | link 2.
Thanks for the tip Mistral75!