I'm confused by the seemingly contradictory statements regarding the 28~300. You say it's sharper in one sentence and then you've become discontent in another.
daledo wrote:
Recently got my Z9 and finally got out to do some testing. I am very encouraged to find that the old sigma 150-500 5-6.3 apo dg os works very well on the z9. The nikon 28-300 is also sharper than on my other cameras. I could not find compatibility info on the sigma and had become discontent with the sharpness of the nikon 28-300. So I may delay for quite a while before investing in new glass.