Flash Control (42, 120)

The following types of flash control are supported when a CPU lens is sued in combination with the built-in flash or optional SB-800 or SB-600 Speedlights.

•i-TTL Balanced Fill-Flash for Digital SLR: Flash output is adjusted for a natural balance between the main subject and the background.

•Standard i-TTL Fill-Flash for Digital SLR: Flash output is adjusted for the main subject; the bright- ness of the background is not taken into account. Recommended for shots in which the main subject is emphasized at the expense of background details, or when exposure com- pensation is used.

Standard i-TTL flash control is used with spot metering or when selected with the optional Speedlight. i-TTL balanced fill-flash for digital SLR is used in all other cases.

Shutter Speeds Available with the Built-in Flash

The following shutter speeds are available when the built-in flash is used.

Mode

Shutter speed

 

 

 

Mode

Shutter speed

 

 

 

 

 

 

 

 

 

, , P *, A *

/–/ s

 

 

 

 

/–1 s

 

 

/–/ s

 

 

S, M

/–/ s

*Slowest shutter speed at which flash will be used can be selected using Custom Setting 24 (Flash shutter speed). Flash will still fire at shutter speeds as slow as 30 s when set to slow sync.

Aperture, Sensitivity, and Flash Range

Flash range varies with sensitivity (ISO equivalency) and aperture.

 

 

 

 

Aperture at ISO equivalent of

 

 

 

 

 

Range

 

100

125

160

200

250

320

400

500

640

 

800

1000

1200

1600

m

ft.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.4

1.6

1.8

2

2.2

2.5

2.8

3.2

3.5

 

4

4.5

5

5.6

1.0–9.2

3 ft. 3 in.–30 ft. 2in.

 

2

2.2

2.5

2.8

3.2

3.5

4

4.5

5

 

5.6

6.3

7.1

8

0.7–6.5

2 ft. 4 in.–21 ft. 4in.

2.8

3.2

3.5

4

4.5

5

5.6

6.3

7.1

 

8

9

10

11

0.6–4.6

2 ft.–15 ft. 1in.

4

4.5

5

5.6

6.3

7.1

8

9

10

 

11

13

14

16

0.6–3.2

2 ft.–10 ft. 6in.

5.6

6.3

7.1

8

9

10

11

13

14

 

16

18

20

22

0.6–2.3

2 ft.–7 ft. 7in.

7

9

10

11

13

14

16

18

20

 

22

25

29

32

0.6–1.6

2 ft.–5 ft. 3in.

11

13

14

16

18

20

22

25

29

 

32

—

—

—

0.6–1.1

2 ft.–3 ft. 7in.

16

18

20

22

25

29

32

—

—

 

—

—

—

—

0.6–0.8

2 ft.–2 ft. 7in.

In the following modes, the maximum aperture (minimum f/-number) is limited according to ISO sensitivity when the built-in flash is used:

 

 

 

 

 

Maximum aperture at ISO sensitivity of

 

 

 

 

Mode

100

125

160

200

 

250

320

400

500

640

 

800

1000

1250

1600

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P, , ,

4

4.2

4.5

4.8

 

5

5.3

5.6

6

6.3

 

6.7

7.1

7.6

8

 

5.6

6

6.3

6.7

 

7.1

7.6

8

8.5

9

 

9.5

10

11

11

For each one-step increase in sensitivity (e.g., from 200 to 400), aperture is stopped down by half an f/-stop. If the maximum aperture of the lens is smaller than given above, the maximum value for aperture will be the maximum aperture of the lens.

Technical Notes / Appendix 141