Smooth Trans Focus (STF) was invented by Minolta in the 1980s and became available in the Minolta 135mm f/2. 8 STF in 1999. The special design of the lens with an Apodization (APD) filter allows for the smoothing of out-of-focus areas, or bokeh.
The APD filter reduces the light transmitted through a lens, but the strength […]. petapixel.com
Photozone tested the Sony FE 100mm STF lens: The Sony FE 100mm f/2. 8 STF GM OSS is certainly a controversial lens. In terms of sheer depth-of-field power and speed, it is a mediocre lens. However, the quality of the bokeh is second to none. sonyalpharumors.com »
2017-08-22 20:33
This is a guest post from Jonathan Stewart. He used the new Sony 100mm STF for these shots. Lens store links: . 100mm STF Lens in Africa Sony’s 100mm f/2. 8 STF lens has scarcely been out two months and it’s already been overshadowed by the remarkable A9, and the two new wide angle zooms. sonyalpharumors.com »
2017-06-28 13:58
DxOmark tested the new Sony 100mm FE STF lens: While the use of apodization elements or filters in lenses is no longer a unique proposition, the introduction of this lens for full-frame Sony mirrorless cameras is bound to be treated with some excitement. sonyalpharumors.com »
2017-05-31 15:34
Imaging Resource posted a very detailed analysis of the new Sony 100mm f/2. 8 STF G Master lens and concludes: The Sony FE 100mm f/2. 8 STF G has a physical aperture of f/2. 8, but exposes like an f/5. sonyalpharumors.com »
2017-02-17 23:43
UPDATE: Announced! Preorders start 10am NYC time Thu Feb 9: 100mm f/2. 8 STF FE at BHphoto, Adorama. 85mm f/1. 8 FE at BHphoto, Adorama. HVL-F45RM Wireless Radio Flash at BHphoto, Adorama. Hot! This is the first image of the Sony 100mm f/2. sonyalpharumors.com »
2017-02-07 18:07
You save $100 on the Laowa 105mm STF lens: E-mount version (Click here) or A-mount version (Click here). Photozone recently tested the Canon version and wrote: The technical quality of the Laowa lens is truly impressive even when ignoring the STF feature. sonyalpharumors.com »
2016-11-13 21:51
While smartphone cameras continue to improve, most don’t offer any kind of variable aperture. While Samsung has developed a way to introduce this in a future device, Huawei has also designed a method, and it’s more akin to a traditional lens.
Samsung has been granted a patent for what it is described as a camera with a moveable construction. The three cameras in the array are arranged in a T-shape and a motorized gear moves them in a sliding motion, which changes their aperture in the process.
JerryRigEverything just published this 7-minute teardown video of the Samsung Galaxy S9, and one of the interesting things it reveals is the mechanical workings of the DxOMark-leading camera, which is the first smartphone camera to feature a variable aperture.