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I am not sure if this is equipment or technique so this may be in the wrong forum, if so then Mods please move.
I have just splashed out on a Nikon 300mm f/2.8 and I bought a 1.4 TC as well.
The lens / combination is pin sharp when it focuses correctly but it invariably front focuses by 2-3 cm. I have done an AF fine adjustment and under controlled indoor conditions the focus is spot on. There is a little variation if the focus is coming back from infinity or if it is going forward from 2m but hey as a retired engineer I am well aware of tolerances.
In the field however, I focus on the body of a bird, hit (and hold) the AF-ON button, lens focusses take the shot and bird is on the edge of focus with foreground foliage pin sharp! If this happens only occasionally then I would suspect movement or technique but it happens more often than not. So guys what am I doing wrong?
I have just splashed out on a Nikon 300mm f/2.8 and I bought a 1.4 TC as well.
The lens / combination is pin sharp when it focuses correctly but it invariably front focuses by 2-3 cm. I have done an AF fine adjustment and under controlled indoor conditions the focus is spot on. There is a little variation if the focus is coming back from infinity or if it is going forward from 2m but hey as a retired engineer I am well aware of tolerances.
In the field however, I focus on the body of a bird, hit (and hold) the AF-ON button, lens focusses take the shot and bird is on the edge of focus with foreground foliage pin sharp! If this happens only occasionally then I would suspect movement or technique but it happens more often than not. So guys what am I doing wrong?