Update.
Got my camera back yesterday. (just over 2 weeks, which isn't too bad really)
It's been to Nikon service centre in Surrey.
No parts replaced. Checked AF, metering, shutter etc etc.
Cleaned sensor, optics, mirror & viewfinder. (obviously not done in a clean-room environment, as there is now a fibre in the VF :roll: )
They've taken 30+ shots.
I took a few pics yesterday, but weather is appalling so not had chance to try for any birds, but it didn't seem any better.
This eve I took a series of pics of a bank-note @ approx 7mts distance with my 300mm F2.8 lens + 1.7TC (my birding combo)
Taken on a solid surface, Aperture priority, mirror delay, VR off.
Used AF-C with dynamic 9 points, AF-s with single point, & even a couple in Auto AF-S single point.
Minus- AF fine-tune was far the worst, so + needed.
These are 3 severe crops;
No AF fine-tune
.
+20 AF fine-tune
.
Manual focus in live-view
.
I'll be ringing the dealer first thing in the morning!