A recently published size comparison image reveals that the Nikon Z9 dwarfs its mirrorless sibling, the Z7, but is notably smaller than its DSLR equivalent, the D6.
When the Nikon Z9 was revealed this month in a surprise (though not unexpected) development announcement, there was a dearth of actual details surrounding the replacement for the Nikon D6 as the Big N's new flagship camera.
Specs were almost entirely absent, and there was no mention of dimensions whatsoever – all we knew is that it possessed the same form factor as the best professional cameras, so it would be around the same size as the D6. However, we now have a better idea of just how big the Nikon Z9 is – not just in comparison to the D6, but also to other members of Nikon's mirrorless family.
Thanks to a post by Nikon Rumors we have a number of size comparisons, extrapolated from the fact that the official image of the Z9 depicts the camera with the Nikon Nikkor Z 24-70mm f/2.8 S trinity lens mounted to the front.
Some industrious Nikon fans have used this to draw direct comparisons to the size of both the D6 and the Nikon Z7 (and, in effect, the Nikon Z7 II, Nikon Z6 and Nikon Z6 II, since they are each almost identical in dimension).
Trying to calculate precise dimensions this way isn't an exact science, with estimations on the Nikon Z9's measurements ranging from 137 x 135mm (width x height) to 154.08 x 153.6mm – with the former making it 85% the size of the D6.
However, by creating an image comparison based on the lens size of the 24-70mm (on the Z7) and the mount / body cap size (of the D6), user RC Jenkins gives us a pretty good 'eyeball test' – and we can see, unsurprisingly, that the Nikon Z9 dwarfs the rest of Nikon's mirrorless lineup, but is smaller (if not by 15%) than the D6.
Of course, at this point it's all just an exercise in detective work; we won't know anything concrete until Nikon gives us official specs. Until then, though, it's fun to put on a deerstalker and speculate!