OwlsEyes
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1bwana1 wrote:
Bruce,
Yes, it appears that the image quality does suffer a bit from the high ISO and the TC 1.4. Bare, I expect the lens will be much sharper.
But with the Nikon version at least you have the opportunity to choose your compromises. Sony won't allow third party lenses to use TCs. I wasn't pleased by this when I had my copy.
I suspect that the shortcomings are due mostly to the shooting conditions and my carelessness with respect to the camera settings.While there is no doubt that the teleconverter will negatively impact image quality, the heavy foreground shadow of deer below the forest canopy juxtaposed to the brightly lit grasslands in the rear resulted in a very challenging situation. The AF was quite spotty for the Z8, as it tended to grab the contrasty grasses rather than the prominent deer. These three were the best of the bunch.. not much to celebrate, but at least they demonstrate that the converter will function with the 70-180.
There are very few lenses where I have found the 1.4x converter to be benign... the 400 f/4.5 was one as was the Z 70-200 f2.8S. Were it not for the fact that I want to be able to carry the Z9, Z8, 17-28, 400 f4.5, and 800PF in one airline permissible bag, I'd have stuck with either the 70-200S or 100-400S. The latter two lenses take up too much space, and they have been my least frequently used optics. The NikonRon 70-180 f2.8 seems to be a good compromise, and it is small enough that it can be packed with the rest of my nature kit in one backpack. Unfortunately, I can't squeeze this stuff in my F-stop Tilopa (my preferred camera pack), so I am making due with the ThinkTank Backlight 36L
cheers,
bruce
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