Sony rumored to launch new FE lenses at Photokina. And one of those will be a STF lens!
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Image above shows the [shoplink 50150 ebay]Sony 135mm f/2.8 STF A-mount lens[/shoplink] (Image from Jörg Haag on SystemKameraForum).
SAR spotted news on the Japanese site Kakaku. A Sony lens engineer said that Sony is close to launch a new FE lens with STF feature:
Sony’s Smooth Trans Focus (STF) technology has a very unique effect on defocused light sources, changing the way defocused areas appear depending on how it is adjusted. Smooth Trans Focus (STF) employs a special “apodization” element that controls the parts of the image that are not in focus. This does not affect the focused part of the image, only what is out of focus, and is set independently from the camera’s focus and aperture via the STF ring.
This will be a lens similar to the Fujifilm XF 56mm f/1.2 R APD Lens.
One more thing: I am pretty sure this will not be the only lens Sony will launch at Photokina!