it's also not a super fair comparison, because my 400TC had all the cheap ebay knockoffs (lens foot and lens cap) while the 600TC came with the much nicer (and probably heavier) Zemlin stuff
I agree. 300 f2.8 + 600 f4 is a killer combo. If Nikon releases a 300TC, I would be in heaven
you can see all the gear I own in my signature. I don't shoot with two different systems, (ie bodies), I just own a lot of Sony glass because it all works exceptionally on Nikon systems.
I have a 35-150 and 100-400 right now, and I've previously owned the 70-200 and 180-600 - but zooms have never been my first choice for anything. I like big fast fixed primes. I only use zooms as a last resort when traveling.
Why i like the 300 2.8VR II tool is if i take a few steps back i get nearer a 200 mm look, take a few steps forward i get nearer 400mm, if i use the 1.4 TCIII when needed is perfectly fine it gives me 420 at F4. I can still step backwards or forwards, In exceptionally good light conditions the 2xTCIII does deliver very usable results.
400mm F2.8 was too heavy too big to close in range to the 600mm.
The Other option is flicking in and out of DX mode to fill the frame, which isn't an issue and very effective.
Add to that whatever option i use i can always crop a little and because of the incredible micro detail and contrast added to great lower light performance the outcome can be quite significant especially with 45mp, if the Z7III comes out with 60mp even better.
Plus the VR II is backwards compatible Z8 Z9 to D850 D6.
The key benefits is just the
natural looking image quality, the formulae of this lens has been used by Nikon for around 40 years to build all the DSLR lenses.
Plus i have had the 300 2.8 VR II for so long now, i dread the thought of the mirror less version price point to save 1kg or have a built in TC
The closest thing to the 300 2.8 VR II currently in mirror less is the 400 F4.5 certainly not better but closer to.
When the light falls of the F2.8 comes into play and the 300 VR II is sharp detailed above all natural looking
at F2.8 always.
For high end exotics i work on a cost to use ratio to determine ownership, this is where the renting option comes in to play.
The 300 2.8 VR II is used for Soccer matches mostly at night, in door night time basketball events, motocross events, tennis matches, along with a 70-200 FL, Rodeo events, car and motor racing events. Outdoor Model shoots. Land scape, Some wild life.
The 600 F4 needs no explanation.
In good light there is no denying the 200-500 180-600 zooms are excellent.
MTF Charts are fine to determine facts, but should not be the deal breaker or maker, in the end its how the photo you make looks and makes you feel.
If the Z version is half the weight and optically still looks natural then hey it may get a look in.
Only an opinion