Nikon z 400mm f 4 5 vr s vs nikon z 600mm f 4 tc vr s?

The 600mm f/4 TC VR S is the bigger reach. At 600mm on full frame it's the pro wildlife choice, and its built-in 1.4x teleconverter is a neat trick. The 400mm f/4.5 VR S is the more sensible one to own if you don't need that much reach. Both are stabilised, autofocus primes for full frame Nikon Z bodies.

On APS-C, the 400mm frames like 600mm and the 600mm like 900mm, so the 600mm is still the stronger choice for distant birds. If you shoot mostly sport or closer animals, the 400mm will likely serve you better. For the reasoning behind long primes versus zooms, see Wildlife and sport. Long lenses also hold their value, so buying used can save you a lot.

Written by Claude from this site's pages.