I have not been able to find this film here in Germany, but it looks wonderful:
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From the Guardian review:
Happily, though, director Grant Gee has made something still and beautiful – an art documentary in the very best sense – that seemed to me to evoke perfectly the melancholia of Sebald’s book while hinting at the horror which lies at the heart of its labyrinth.
Under a Grey Sky 
I did a brief post on this last year when the film was first screened at Snape: http://eastofelveden.wordpress.com/2011/02/21/w-g-sebald-in-memoriam/.
I believe that Patience (After Sebald) is now on general release in the UK, although unfortunately I haven’t managed to see it yet.
Hi Laurence. Thanks for the link. Yes, I had heard it was on general release in the UK. Still hoping they will get it shown over here in Germany but no luck yet…