Bedienungsanleitung Nikon SB-25 (Seite 6 von 73) (Englisch)

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Chapter

Main Features/Functions — SB-25’s Flash Capabilities

Fully Automatic Fill Flash

Generally performed at night or in dim light, flash photogra-

phy can also be used to reduce shadows in pictures shot in

bright sunlight, resulting in a pleasing, more natural effect.

Using a flash this way, with ambient light, is called “fill-

flash.” When used with the SB-25, many Nikon SLR cam-

eras provide Automatic Balanced Fill-Flash, to automatically

keep flash brightness in balance with the ambient light.

The result is brighter shadows, sharper details and more

vivid colors. Matrix Balanced Fill-Flash operates in virtually

all light conditions within the camera’s metering range and

available synchronized shutter speeds. Operation is fast and

automatic, while it allows manual operation for exposure

compensation techniques to vary fill-flash effects.

Center-Weighted Fill-Flash operates when you switch

the metering system to Center-Weighted. This metering

system measures the entire scene and emphasizes its read-

ing on the center area. By pointing the center-weighted area

at different parts of the scene, you can choose which

brightness level you want for basic available-light exposure.

By selecting Spot Metering System, Spot Fill-Flash oper-

ates in a similar manner as Center-Weighted Fill-Flash,

although the meter reads a narrower center area, or “spot.”

Automatic Balanced Fill-Flash

Thanks to a computer-controlled exposure meter (multi-

segment sensor) and TTL (through-the-lens) sensor, shutter

speed, aperture, and even flash output can be automatically

controlled to keep both subject and background in correct

exposure.

In Matrix Balanced Fill-Flash, the camera’s Matrix

Metering System (i.e., multi-segment sensors) determines

the correct exposure based on ambient light. Flash output is

then controlled with the center-bottom-weighted TTL sen-

sor which monitors light reflection from the film surface and

regulates timing to terminate output in realtime with flash

illumination. This way, flash illumination brightens the scene

(mainly foreground subject), but does not overpower the

ambient light exposure (background).

Matrix Balanced Fill-Flash

The SB-25 is a most versatile Speedlight which offers vari-

ety of convenient features to enhance your flash photogra-

phy. To understand these features/function will help you

operate the SB-25 easily, therefore, enjoy more options and

creative possibilities. Each of following topics cover particu-

lar Nikon SLR models:

• Fully Automatic Fill Flash: F90-Series/N90, F4-Series,

F-801/N8008, F-801s/N8008s, F-601/N6006, F-601

N6000 and F-401x/N5005

• Standard TTL Flash: F90-Series/N90, F4-Series,

F-801/N8008, F-801s/N8008s, F-601/N6006, F-601

N6000, F-501/N2020, F-301/N2000, F-401/N4004,

F-401s/N4004s, FA, FE2, FG and Nikonos V

• FP High-Speed Sync Flash: F90-Series/N90

• Rear-Curtain Sync Flash: F90-Series/N90, F4-Series,

F-801/N8008, F-801s/N8008s, F-601/N6006 and

F-601

M/N6000

• Red-Eye Reduction Control: F90-Series/N90

• Repeating Flash: All the Nikon SLR models covered in

this manual

SB-25_En 03.1.14 8:18 PM Page 10

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