ABSTRACT Phase‐induced amplitude apodization (PIAA) uses two aspheric optics to produce an achromatic apodization of an incoming beam by changing the geometrical distribution of the light in the pupil ...

Julien Lozi, Frantz Martinache, Olivier Guyon, Phase-Induced Amplitude Apodization on Centrally Obscured Pupils: Design and First Laboratory Demonstration for the Subaru Telescope Pupil, Publications ...

As such, we take an in-depth look at another lens with an apodization filter that’s been on the market for a few years now, in our long-awaited Fujifilm XF 56mm F1.2 R APD review.