Midwest Optical offers a complete line of Neutral Density Filters, which can be used with monochrome or color cameras. They are designed to reduce light intensity neutrally over a specific wavelength range without affecting image color or contrast. The filters are available in a variety of optical densities for both visible and broad spectrum and VIS+NIR with special surface quality; 40/20 scratch/dig.
247MP CMOS by Sony
Sony recently released a 247MP rolling shutter CMOS image sensor available in monochrome (IMX811-AAMR) and color (IMX811-AAQR) variants which have a 64.84mm diagonal, a square pixel array, as well as 5.3fps.