Hi Arkady
At 3 foot of water with a current I've got a feeling my tripod may well have had trouble staying put, but point taken
As to the exif info I was probably (though couldn't swear to it) using my 2* telephoto lense - so the figures may be wrong.
In terms of what was I focusing on - well it was the first post, but the shadow pool in front seems to be more focused.
Allan