Removing AA Filters is a Mistake for the Industry, Said IR

http://www.imaging-resource.com/PRODS/olympus-e-m1/olympus-e-m1A.HTM

Via Image Sensors World

Quoted:-

"Low-pass filters, the lack thereof, and moiré

There's been a strong move in the camera industry lately to remove low-pass filters (aka anti-aliasing filters or LPFs) from cameras, in pursuit of greater image sharpness. The Olympus OM-D E-M1 is one of the latest camera models to join this