Canon 1D X Mark II is a 4K Monster with Built-In Lens Optimization

One of the interesting new features in the 1D X is built-in image optimization. Canon’s new Digital Lens Optimizer technology stores information about the optical flaws of lenses and then digitally fixes those things on the fly with virtually zero decrease in camera speed. For the first time in a Canon EOS DSLR, the camera can automatically correct for peripheral brightness, chromatic aberration, distortion (barrel and pincushion), and diffraction (blurring at small apertures) — things that were previously corrected in post-production.