D850: Extreme resolution meets extreme speed.Nikon\'s first back-side illuminated (BSI) full-frame sensor with no optical low-pass filterAt the heart of the D850 is a Nikon designed sensor like none before it�a back-side illuminated (BSI) FX-format full-frame CMOS image sensor with 45.7 megapixels and no optical low-pass filter.NIKKOR Lenses: The Gold StandardGold Ring Series NIKKOR optics are among the finest lenses available, drawing peak performance from high-resolution image sensors with stunning sharpness, edge-to-edge clarity and virtually no distortion or aberrations regardless of subject, environment or lighting conditions.Autofocus that keeps upThe D850 uses the same field-proven ultra-accurate AF system as the flagship D5. With 153 focus points, 99 cross-type sensors and a dedicated AF processor, the D850 delivers all of its 45.7 MP performance with NIKKOR lenses.Versatile like youPerformance enhancements inspired by photographer feedbackA multimedia powerhouseMultimedia content creators rejoice. You are now free to record 16:9 4K Ultra HD (3840x2160) in full frame glory using the total width and resolution of the D850\'s back-side illuminated (BSI) CMOS sensor.Advanced video features for better moviesAuto ISO handles smooth lighting transitions from ISO 64 to the sensitivity of your choice (all the way up to Hi-2).Time-lapse in breathtaking resolution4K and 8K Ultra HD time-lapse with smooth exposure transitions.Phenomenal battery performanceAll day shooting shouldn\'t require frequent battery changes.