Lens Opinion

How Sony's STF Lens Trades Two Stops of Light for Smoother Bokeh

via Fstoppers
How Sony's STF Lens Trades Two Stops of Light for Smoother Bokeh
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Sony's 100mm STF lens puts a graduated grey apodisation filter inside the barrel, cutting two stops of light to produce unusually smooth out-of-focus rendering. Fstoppers explains the optics behind a design that has existed since the 1990s and has never crossed into mainstream use.

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Sony
bokehlens opticsportrait photographySTFapodisation

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