Today Aurora Aperture introduced a new filter system called the Aurora Aperture Adapter Mount Format (AMF) filter for mirrorless mount adapters such as the Canon Mount Adapter EF-EOS R, the Nikon FTZ, the Sigma MC-11 for Sony E-mount, and the Sigma MC-21 for L-mount:
Additional information can be found at aurora-aperture.com.
Aurora Aperture products are sold at Amazon.
Press release::