> especially interesting that nobody has done it before I'd be astonished if this hasn't been done before, at least several times in variations. However, some

> especially interesting that nobody has done it before I'd be astonished if this hasn't been done before, at least several times in variations. However, someone having done it, and you and I finding out about it, are very different things. And the latter is much, much easier today than it was for most of the life of this lens.