This works best in lenses that have zero vignetting, like the purpose-designed Minolta/Sony 135 STF and the new FE-mount 100 STF. By comparison, the Fuji 56/1.

This works best in lenses that have zero vignetting, like the purpose-designed Minolta/Sony 135 STF and the new FE-mount 100 STF. By comparison, the Fuji 56/1.2R and the Laowa 105/2 with apodization filters lose the effect in the corners where the vignetting cuts off the soft edge of the blur circle.