>>3760339>Tv modeno
The critical aspect for this kind of shooting is deep enough DOF to hit people on the face even when focus lags a bit as they approach, and so the MTF of the lens is giving the sharpest image... and shutterspeed, as you suggest...
buuuuut by setting iso to fast ramp it always tries to keep the shutterspeed at 1/250th or above (1/60th for normal ramp and 1/30th for slow ramp...iirc)...this is moderated by focallenght somewhat but basically it automatically handles several preferences at once...and i dont care about ISO due to the small size of my images, and the fact that the K3 and K5 have very low noise high iso until you get above 6400.... plus of course i could alway set a lowish cap to the auto-range anyway. (i dont)
So basically i just set the aperture for a DOF thats useful in practice, and gives either MTF-sharpest or close thereto..and let the camera do everything else. Which because of the way the ISO ramp works: is perfect.
Even in night shooting at parties etc, i just set a reasonable ISO cap so i dont have to fix whitebalance on EVERYHTING, and open the perture more. The bias to fast shutterspeeds and sensor shift stabilisation lets me shoot in ludicrously low light, even on the 70-200mm
