i'm not so sure i'm feeling that hyperfocal stuff. for my exp, focus does matter, even at 24mm. Does the samyang operate in 1/3 stops, 1/2? whole stops or some weird mix? very often setting my aperture precisely is of great importance, and i'm not talking about for DOF's sake. I for one don't care to screw around with anything but 1/3 stop increments everywhere. it's the only real complaint i have with my fuji MF rangefinder. 1/2 stop aperture, full stop shutter speed, what BS. then again running with no batteries and having as fast as 1/500th synch speed is sweet.
Not sure about the 24mm, but my 35mm Samyang has clicks at f/1.4, then f/2.0, then half-stops to f/11, and f/16.
I started out by pulling it apart and gouging a bit to get a click between f/1.4 and f/2.0, but then I gave up and removed the ball-bearing, so now it's clickless...
I know it's annoying having only 1/2-stop lenses and 1-stop shutter speeds, it's the same on my P6/K60 and lenses. But then, even on my 7D and EF-lenses the exposure's never 'exactly' right, pushing/pulling a digital file up to a stop doesn't ruin much (unless your highlights are blown, but that happens a lot more often in digital than film)