Nikkor Z 400mm f/4.5 vs. 600mm f/6.3 vs. 800mm f/6.3 specifications comparison: Nikon Nikkor Z 600mm f/6.3 VR S lens additional coverage Related posts: Nikkor Z 70-180mm f/2.8 and Nikkor Z 180-600mm f/5.6-6.3 VR lenses officially announced and available for pre-order