There is only a hand full of lenses which incorporate an apodization element which improves bokeh at the cost of light transmission. Today I will compare two of them. The Sony STF 2.8/135 was released 1999 by Minolta and is known for it’s uniquely smooth bokeh. The Laowa STF 2/105 is a new lens released this year by Chinese newcomer Venus Optics. In this post I will see where their strengths and weaknesses lie.