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.
^"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. from the original on 2017-02-11. Retrieved 2017-02-10.
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smooth, trans, focus, technology, photographic, lenses, uses, apodization, filter, realize, notably, smooth, bokeh, with, rounded, focus, highlights, both, foreground, background, this, accomplished, utilizing, concave, neutral, gray, tinted, lens, element, ne. 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 Smoth Trans Focus with bokeh discs Lenses featuring Smooth Trans Focus technology Minolta STF 135mm F2 8 T4 5 introduced 1999 Sony a STF 135mm F2 8 T4 5 SAL 135F28 introduced 2006 Sony FE 100mm F2 8 STF GM OSS SEL 100F28GM introduced 2017 1 See also editSTF 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 stopReferences edit 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 nbsp This photography related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Smooth Trans Focus amp oldid 1219305951, wikipedia, wiki, book, books, library,
