gordonyz wrote: padam19 wrote:
[so it is less sharp with more colour fringing.
Similar principle to letting distortion go to insanely high figures, arguing that people can't see the drawbacks of corrections (spoiler alert: they are still there).
Need a 400/4.5 with tc comparison to 600 f6.3
I am sure we will eventually see that, but AP did a sharpness and fringing test for both and we can see that the 400mm f4.5 is better as expected, based on what we have seen in the optical design..