Nevertheless I wonder why Nikon is releasing a 600 mm prime in short time distance to the 180-600 mm Zoom that still has not got delivered to the customers...
Comparing 600PF with similar lenses:
Lens | Weight (g) with tripod collar | Length (mm) | Min Focus | Max Magnification |
Z 400/4.5 | 1245 | 234.5 | 2.5m | 1:6.3 |
AFS 500PF | 1460 (1585 with FTZ) | 237 (267.5 with FTZ) | 3m | 1:5.5 |
Z 600PF | 1470 | 287 | 4m | 1:6.7 |
Z 180-600 | 2140 | 315.5 | 2.4m | 1:4 |
AIS 600/5.6 | 2800 (2925 with FTZ) | 387.5 (418 with FTZ) | 5m | 1:7.3 |
So, the new lens is 670g lighter than the 160-800, slightly lighter than the 500PF+FTZ, and half the weight of the old AIS Nikkor. This makes it much less tiring for hand-held photography compared to similar lenses.
It is only 37.5mm shorter than the 180-600, but the zoom is already quite compact for this focal length. It's much shorter than the old AIS lens. The 500PF+FTZ is 20mm shorter, and as expected, the 400/4.5 is significantly shorter.
The close focus limit and max magnification is nothing special. If you want closeups of flowers, insects and other small creatures from a distance, the 180-600 is your best option, or the 400/4.5 + 1.4x TC
The MTF of the new lens is spectacular, basically a flat line just a shade below 100%, all the way to the edge of the image. Only the 500PF matches it here. When comparing to the 180-600, besides the compact dimensions and lighter weight, where the 600PF really shines is its higher image quality. And the zoom is already very good. It should mean the new lens performs better with TCs than the zoom if even greater reach is required.
Is this enough to justify its higher price? For most, I think the flexibility, close focus ability, high quality, and lower cost of the zoom will be most attractive to most photographers. Only those who require the very highest quality, portability, and hand-holdability will feel the need to dig deeper into their pockets for the 600PF