Seems that Nikon is racing towards the high-end now.
Chief Editor - opticallimits.com
Doing all things Canon, MFT, Sony and Fuji
This is going to be one mother of a lens ........ 400mm F2.8 to 560mm F4 at the flick of a switch ....... and only 2,950 gms !! (flourite elements as opposed to PF though)
I'm sure it will outperform the current AF-S E high end primes, especially with the converter clicked in .......
IMHO most Z9 owners will be waiting for the Z 600mm F4 S ........ coupled with the 1.4X / 1.7X and 2X converters, which apparently cause very little loss of quality compared the older range.
Still all that is for the well heeled ...... Nikon's dream-ware range!
Nice lens indeed.
PF and fluorite are not mutually exclusive ;-)
I am under the impression that resolution loss from the use of TCs primarily is due to the cropping the TCs do. So I am a bit sceptical of reports that claim that new TCs cause very little loss of quality compared to the older DSLR TC range...
Speaking of TC, how about generalizing the concept further?
For instance by building a 3 focal length lens, e.g. 20-35-50 f1.8?
I guess it could be made smaller than a zoom while providing better image quality?