Do I need a 27mm x-mount lens . . .

[MiniMoke]

Have found nothing... if the dial was programmable you could set it to something else and use the < > buttons to change aperture, but Fuji is no Olympus where every button is customizable.

 

[Dante_Stella]

I'm going to read up - maybe there's a way to lock that dial (like the center command dial can lock).

I like the lens but hate the vulnerability of this little dial to getting knocked off its setting. A small square of gaffer's tape works to keep it locked up. In fact, it worked so well, I applied a square over the AF switch and the EV comp dial.

Dante