The N (Y) Button

I

[Fill flash] (front-curtain sync)

This mode is recommended for most situations.

b, P, S, A, M, EFCT (j and m excluded)

J

[Red-eye reduction] (red-eye reduction)

The flash fires before the photograph is taken, reducing “red-eye”.

b, P, S, A, M, EFCT (j and m excluded)

L

[Slow sync] (slow sync)

As for “fill flash”, except that slow shutter speeds are used to capture background lighting at night or under low light.

P, A

K

[Slow sync + red-eye] (red-eye reduction with slow sync)

As for “red-eye reduction”, except that slow shutter speeds are used to capture background lighting at night or under low light.

P, A

M

[Rear-curtain sync] (rear-curtain sync)

The flash fires just before the shutter closes.

P, S, A, M

s

[Flash off]

The flash does not fire.

b, P, S, A, M, EFCT