I am not questioning why the exposure of my shots are crap - I know they are crap, I will try harder next time
. And AF button/ recompose would not have helped in this instance, but thanks for reminding me how to do it.
Thing is, I started to figure out that AF micro adjustment affects (my particular copy of ) the lens and camera depending on the focus distance in this case.
Time to reset all the AF adjustment data and do some proper re-calibration and I will post my findings here.
thinking back, I remember someone posted saying that, before he updated his firmware, he needed dial in +10 or similar to get accurate focus, but after an update, the perfect focus is achieved at adjustment 0 - sounds like this could be the same case for me, why this is, I don't know, but at the end of the day if my lens focus properly I won;t care too much.