The Nikon D850 improves on the D810 with an extra boost in ISO (from 32-51200 to 32-102400, extended modes), a leap in AF points (from 51 to 153), more megapixels (from 36.3 to 45.7), a faster shooting speed, slow motion capabilities, and – most notably – the ability to shoot 4K video. As with the D810 and the D800E before it, the D850 lacks an optical low-pass (anti-aliasing) filter. Under normal shooting circumstances, the optical low-pass filter prevents the instance of moiré patterns from showing up in your images of tight-patterned objects, such as fabrics. The benefit of removing these anti-aliasing properties is maximum sharpness for Raw files, optimized for landscape or simply extreme detail-style shooting.
