pburke Offline Upload & Sell: Off
|
Just rent the 600 for a week and see what you think. I certainly wouldn't listen to the internet experts when spending that much money.
logic suggests:
400 will be better than 600 if you need a shorter lens
600 will be better than 400 with TC-14, but no by a huge factor. Corners mostly
600 with 1.4x will be better than 400 with the 2x.
600 with 2x will be better than 400 with 1.4x and 2x or DX body with 2x.
I never shot a 400/2.8, only 600f/4 and 300/2.8, which as a combo was all I ever needed with two TCs. But that was 15 years ago and Canon. Today, with DX in the game and more advanced and lighter/smaller 400mm lenses, I'd probably be happy with a 400mm and a DX body for the few times I need extra reach. I was shooting motorsports a the time and I liked ot frame tight, while others got away with much shorter lenses. Lots of factors can affect your choice of lens, not just plain performance on paper.
|