Smooth Trans Focus
In this article, we will explore the fascinating world of Smooth Trans Focus, a topic that has captured the attention and interest of people around the world. With a rich history and significant influence on different aspects of daily life, Smooth Trans Focus has played a fundamental role in society over time. Through an in-depth analysis, we will examine the different aspects and dimensions of Smooth Trans Focus, from its origin and evolution to its impact today. Whether you are an expert on Smooth Trans Focus or just getting into this topic, this article will provide you with valuable information and unique perspectives that will allow you to better understand its importance and relevance in today's world.
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The Smooth Trans Focus (STF) technology in photographic lenses uses an apodization filter to realize notably smooth bokeh with rounded out-of-focus highlights in both the foreground and background. This is accomplished by utilizing a concave neutral-gray tinted lens element next to the aperture blades as apodization filter, a technology originally invented (and patented) by Minolta in the 1980s, and first implemented in a commercially available lens in 1999. In contrast to soft focus lenses, STF lenses render a perfectly sharp image in the focus plane.
Lenses featuring Smooth Trans Focus technology:
- Minolta STF 135mm F2.8 (introduced 1999)
- Sony α STF 135mm F2.8 (SAL-135F28) (introduced 2006)
- Sony FE 100mm F2.8 STF GM OSS (SEL-100F28GM) (introduced 2017)[1]
See also
- STF function (an emulation of the effect in the Minolta Maxxum 7)
- Fujinon XF 56mm F1.2 R APD (a similar lens introduced by Fujifilm in 2014)
- Venus Optics Laowa 105mm f/2 Smooth Trans Focus (a similar lens introduced by Venus Optics in 2016)
- f-stop
- T-stop
References
- ^ "Neu von Sony: E-Mount-Objektive 100 mm F2.8 STF GM, FE 85 mm F1.8; Blitz HVL-F45RM". Photoscala (in German). 2017-02-07. Archived from the original on 2017-02-11. Retrieved 2017-02-10.
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