Nikon D3400 Reference Manual - English - Page 290

The SB-5000, SB-910, SB-900, SB-800, SB-700, SB-600, SB-500, and SB-400 provide red-eye reduction, while the SB-5000, SB-910, SB-900, SB-800, SB-700, SB-600, and SU-800 provide AF-assist illumination with the following restrictions: • SB-5000: In the case of 24-135 mm AF lenses, AF-assist illumination is available with the focus points shown at right. • SB-910 and SB-900: In the case of 17-135 mm AF lenses, AF-assist illumination is available with the focus points shown at right. • SB-800, SB-600, and SU-800: In the case of 24-105 mm AF lenses, AF-assist illumination is available with the focus points shown at right. • SB-700: In the case of 24-135 mm AF lenses, AF-assist illumination is available with the focus points shown at right. 24-37 mm 38-135 mm 17-135 mm 24 mm 25-105 mm 24-135 mm Depending on the lens used and scene recorded, the in-focus indicator (I) may be displayed when the subject is not in focus, or the camera may be unable to focus and the shutter release will be disabled. 266 Technical Notes