Flexible Program

In programmed auto, different combinations of shutter speed and aperture can be selected by rotating the main command dial (“flexible program”). All combinations

produce the same exposure. While flexible program is in effect, an asterisk (“*”) appears next to the exposure- mode indicator in the top control panel. To restore

default shutter speed and aperture settings, rotate the main command dial until the indicator is no longer displayed. Default settings can also be restored by turning the camera off, selecting another exposure mode, performing a two-button reset (

128), or choosing another setting for Custom Setting b3 (EV step;

184).

Exposure Program

The exposure program for programmed auto is shown in the following graph:

ISO 200; lens with maximum aperture of f/1.4 and mini- mum aperture of f/16 (e.g., AF 50 mm f/1.4 D)

]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[EV

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F1

 

 

 

 

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F1.4

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F2

 

 

 

 

 

 

 

 

 

 

 

 

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aperture

F2.8

 

 

 

 

 

 

 

 

 

 

 

 

177

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/3

 

F4

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

18

 

F5.6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F8

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F11

 

 

 

 

 

 

 

 

 

 

 

 

21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F16

 

 

 

 

 

 

 

 

 

 

 

 

22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F22

 

 

 

 

 

 

 

 

 

 

 

 

23

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F32

8"

4"

2"

1"

2

4

8

15

30

60

125

250

500 1000 2000 4000 8000

 

30" 15"

Shutter speed

The maximum and minimum values for EV vary with sensitivity (ISO equivalency); the above graph assumes a sensitivity of ISO 200 equivalent. When matrix metering is used, values over 171/3 EV are reduced to 171/3 EV.

Taking Photographs—Exposure

87

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Nikon D2H manual Flexible Program, Exposure Program