OMG!!! I am finally getting to grips with this camera and whilst I am still getting lots of missed shots I am now leaning towards acurve rather than camera fault. Will decide after the shoot I have this weekend.
Anyhow...in messing with settings etc I decided to have a go at high ISO. Here is the result, a nothing shot of one of our cats but hell that is a pretty good outcome for ISO 12800. @f4.5, 1/100 on a 50mm 1.4 lens