Sounds about right to me Lew.

I would guess he is using a 10-20mm lens and has had to zoom a little because of the filters used so as not to get any vignetting.

Who took it Eddie ? Maybe we could ask them ?

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html