Nikon 25446B D90 User's Manual - Page 91

Flash Mode Press the M button and rotate the main command dial until the desired flash mode is displayed in the control panel. M button Main command dial Control panel h The current flash mode is displayed in the control panel as shown below. Y (red-eye reduction): Use for portraits. Red-eye reduction lamp lights before flash fires, reducing "red-eye." j (off): Flash does not fire even when lighting is poor or subject is back-lit. AUTO (auto flash): When lighting is poor or subject is back lit, flash pops up automatically when shutter-release button is pressed halfway and fires as required. SLOW (slow sync): Shutter speed slows automatically to capture background lighting at night or under low light. Use to include background lighting in portraits. REAR (rear-curtain sync): Flash fires just before shutter closes (see below). If this icon is not displayed, flash will fire immediately after shutter opens. A Rear-Curtain Sync Normally the flash fires as the shutter opens ("front-curtain sync"; see below at left). In rear- curtain sync, the flash fires just before the shutter closes, creating the effect of a stream of light behind moving subjects. Front-curtain sync Rear-curtain sync 71