For aperture priority: (A) continuous from 16min to 1⁄4000s., for manual adjustment: 8s to 1⁄4000s in half steps, from 8s to 16min in half steps, B: For long exposures up to maximum 16min (in conjunction with self-timer T function, i.e. 1st release = shutter opens, 2nd release = shutter closes), (1⁄180s): Fastest shutter speed for flash synchronization, HSS linear flash mode possible with all shutter speeds faster than 1⁄180s (with HSS-compatible Leica system flash units)
1/4000 sec