At the fish market.

i like this ... there's an overall impression of sharpness that oddly isn't borne out by close inspection, but I'm guessing it's as a result of plenty of contrast ... at what shutter and aperture was this taken?

 

There's a lot going on in the scene and with the super thin DOF it's very hard to tell exactly what the camera focused on so as a result everything looks a bit soft. A lens with that large an aperture would be much more effective for isolating a single subject from the background rather than a scene like this one.

I'm sure I'm not telling you anything you don't already know -- just thinking out loud more than anything else...

 

Of course, the nice part about a wide aperture lens is that you end up with a shot at all whereas if you had a bottom end of f3.5 you couldn't get anything reasonable. It's always amazing how our eyes fool us. You think you're in an environment with adequate light for your trusty f/2 lens, and it's still too dark when you actually meter.