70-200VRx1.7 VS 80-400VR
Posted: Sat Jan 20, 2007 1:20 pm
hmmm, searching, and other than Ken rockwells two sentences, I cannot find a comparison between the set up of the Nikon 70-200VR with the TCx1.7 VS 80-400VR.
I like the idea of the 80-400 massive range, but note its slower.
The current applications for me, are motorsport (ametuer club days), I have no interest in birdwatching kinda pics. Kiteboarding shots from the shoreline (think the focus speed will be too slow for this.
Am I on track, that the TC1.7, will add focal length by 1.7 times, and 1.5 stops slower? So this makes the 2.8 a 4.0? Therfore, with its faster focus speed, the TC combo would be better suited than the 80-400?
Coupled this with the 70-200 is already on board, I get to 120-340mm with the fast focus (assuming the TC doesnt slow focus down), at around f/4.
Anyone used both, and can give some feedback?
I know there is another member in here looking to sell his 80-400, to fund a 70-200VR+TC1.7.
I like the idea of the 80-400 massive range, but note its slower.
The current applications for me, are motorsport (ametuer club days), I have no interest in birdwatching kinda pics. Kiteboarding shots from the shoreline (think the focus speed will be too slow for this.
Am I on track, that the TC1.7, will add focal length by 1.7 times, and 1.5 stops slower? So this makes the 2.8 a 4.0? Therfore, with its faster focus speed, the TC combo would be better suited than the 80-400?
Coupled this with the 70-200 is already on board, I get to 120-340mm with the fast focus (assuming the TC doesnt slow focus down), at around f/4.
Anyone used both, and can give some feedback?
I know there is another member in here looking to sell his 80-400, to fund a 70-200VR+TC1.7.