I fail to see how focus is dependent on software. I see a lens, and I understand how it works. Apparently the author of the article does not.
I do however completely love the idea of downloading SLR 'scene files' for curve and etc algorithms. That's cool. FInally digital medium gets some film stocks! Creative choice is always welcome! I just doubt focus of a lens is software based.... maybe the autofocus function... but we only noobs use auto focus.
BTW... since when does 'open source' = sh*tty design? It seems to me they could design a more attractive body shape. I'd hate to think I was shooting with a lens attached to an ink cartridge.
Since they don't have a manufacturing line it's not easy to make something not... you know... sucky. It's good to see they're making progress on this, I remember reading about it a long time ago. I'd assumed it died out since then.