Dave,
I only managed a couple of shots before the cloud came in, so picked on the one with highest shutter speed. The intention was to progressivly work my way down the shutter speed range and that would show up the minimum that I could go to. Just been outside and its a bit of a dead duck as quite a bit of general thin cloud as well as thicker stuff. Hey ho, will keep trying if we get any clear skies before Saturday.
As for the eclipse I will just use the 400 and no converter. Less magnification but lots fewer probs in terms of shutter speed.
Don
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