Greg,
Thanks, but most of the sharpening errors you see here are in fact JPEG compression artefacts - I uploaded a 755kb file here, which the IIS system shrinks to below 500KB, in the process "worsening" things. I have uploaded this revision to my PBase account:
http://www.pbase.com/lewism/image/160889307
Still over-sharpened, but was TRYING to compensate for the focus issue (which it failed to do). Also remember this is really SMALL data - not even 2 hours worth.