118TTL Auto Flash OperationThe difference between Automatic Balanced Fill-Flash and stan-dard TTL flash is in whether the flash output level is automati-cally compensated or not. Operation is the same.• Usable film speed range in TTL auto flash is ISO 25 to 1000.1 Set camera’s metering system and exposure mode, refer-ring to the table on pages 111-113.2 Turn Speedlight on.3 Set Speedlight’s mode selector to TTL.• With the SB-23, setting the mode selector to TTL simultane-ously turns the Speedlight on.4 Look through the viewfinder, compose picture and lightlypress shutter release button, to confirm exposure indica-tion in the LCD readout. In autofocus operation, also confirmthat in-focus indicator (/) appears.• Do not block the flash or AF-assist illuminator LED during flashphotography.• In Programmed or Shutter-Priority Auto exposure mode, if youfail to set CPU Nikkor lens other than G-type to minimumaperture, ƒEE blinks.5 Confirm exposure and shooting distance.Refer to the shooting distance bars of SB-28/28DX, SB-27,SB-26, SB-25 or SB-24, or the flash shooting distance rangetable of the SB-23, SB-22s, SB-22 or SB-20. (See page 116when 1/300 TTL High-Speed Sync is selected.) For details, seeSpeedlight’s manual.6 Confirm that ready-light is on, then fully depress shutterrelease button to take a picture.P400 (E) 02.12.27 6:42 PM Page 118