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Nikon z 800mm f 6 3 vr s vs nikon z 400mm f 4 5 vr s?

Both are stabilised Nikon Z primes, and both fit the full-frame Z bodies. The 400mm f/4.5 is the one I'd pick for most people. It works on full frame and on APS-C bodies like the Z50, where it frames like 600mm. It's the better all-round lens for sport and larger animals.

The Nikon Z 800mm f/6.3 VR S is for birds and anything else that's far away. Its Phase Fresnel element keeps it light enough to hand-hold, and on APS-C it frames like 1200mm. Its f/6.3 maximum aperture is slower, so it needs more light.

If you're unsure how much reach you need, read reach in wildlife and sport, then my picks.

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