What is your budget Joe? And is 21mm close enough, or does it have to be a 24mm, no more, no less? I confess that, if I was seeking a ultra wide angle today in a mechanical body, and could have the pick of all options, it would, without a doubt, be a 21mm Biogon to go with my Contax II. I suppose a decent Kiev would also be an option if you needed something affordable to put it on. Separate RF/VF of course. But what a lens. I'm sure I'm in the minority, here. But take a look at some images made with those classic Zeiss lenses. Ridiculously sharp, age notwithstanding.i had an x700, very nice rig...
i'm thinking something more basic and less electronic...
but still open to all suggestions.
Cheers,
Brett

