02-03-2014, 11:18 AM
Jeez... just how complicated things can get.
Let me quote Klaus again "I've done longer tests in the past".
To get things back down to very basic facts (and away from equivalency discussions, which are fruitless in this context): "longer" simply refers to the shooting distance required. Since the test target doesn't change, a 500mm lens on a APS-C camera requires a longer shooting distance than a 600mm on full-frame. It's as simple as that (and, yes, due to "equivalent focal length"... or cropped field of view, if the other phrase gives you headaches).
As Klaus already said, I'll test the lens on Nikon FX (and FX only). And, to add some fuel to the fire, probably alongside the Nikon AF-S 80-400 VR
However, I don't know yet when those tests will be done and published. In fact, the Tamron isn't even available over here, yet.
-- Markus
Let me quote Klaus again "I've done longer tests in the past".
To get things back down to very basic facts (and away from equivalency discussions, which are fruitless in this context): "longer" simply refers to the shooting distance required. Since the test target doesn't change, a 500mm lens on a APS-C camera requires a longer shooting distance than a 600mm on full-frame. It's as simple as that (and, yes, due to "equivalent focal length"... or cropped field of view, if the other phrase gives you headaches).
As Klaus already said, I'll test the lens on Nikon FX (and FX only). And, to add some fuel to the fire, probably alongside the Nikon AF-S 80-400 VR
However, I don't know yet when those tests will be done and published. In fact, the Tamron isn't even available over here, yet.
-- Markus
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