UPDATE: James Miller removes optical low-pass filter from 5D Mark III for resolution increase / new footage - EOSHD.com - Filmmaking Gear and Camera Reviews
Rawlite OLPF for Blackmagic URSA Mini Pro 4.6K (G1|G2) - RAWLITE
Optical low pass filter used in Digital camera(OLPF)-OLPF Products-Nanyang Lida Optic-electronics Co.,Ltd.
New Optical Low Pass Filter Makes the RED DRAGON Sensor Even More of a Beast