300U❚❚ Auto FP High-Speed SyncWhen 1/320 s (Auto FP) or 1/250 s (Auto FP) is selected forCustom Setting e1 (Flash sync speed, 0 299), the built-in flash canbe used at shutter speeds as fast as 1 / 320 s or 1 / 250 s, whilecompatible optional flash units (0 382) can be used at any shutterspeed (Auto FP High-Speed Sync).This option determines the slowest shutterspeed available when using front- or rear-curtain sync or red-eye reduction inprogrammed auto or aperture-priority autoexposure modes (regardless of the settingchosen, shutter speeds can be as slow as 30 sin shutter-priority auto and manual exposure modes or at flashsettings of slow sync, slow rear-curtain sync, or red-eye reductionwith slow sync). Options range from 1 / 60 s (1/60 s) to 30 s (30 s).Flash sync speed 1/320 s (Auto FP) 1/250 s (Auto FP) 1/250 sShutter speedBuilt-inflashOptionalflash unitBuilt-inflashOptionalflash unitBuilt-inflashOptionalflash unitFrom 1 /8,000 to butnot including 1 / 320 s — Auto FP — Auto FP — —From 1/ 320 to but notincluding 1 /250 s Flash sync * — Auto FP — —1 /250–30 s Flash sync* Flash range drops as shutter speed increases. Flash range will neverthelessbe greater than that obtained at the same speeds with Auto FP.D The Flash-Ready IndicatorWhen the flash fires at full power, the flash-indicator in the cameraviewfinder will blink to warn that the resulting photograph may beunderexposed. Note that the flash-ready indicators on optional flashunits will not display this warning when 1/320 s (Auto FP) is selected.e2: Flash Shutter Speed G button ➜ A Custom Settings menu
