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Smooth Trans Focus

From Wikipedia, the free encyclopedia

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:

See also

References

  1. ^ "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.


This page was last edited on 16 June 2020, at 20:03
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