Owner`s manual

4.1. FLASH–AMBIENT CONTROL 27

4.1.2 A Mode Flash

In A Mode, the photographer sets the aperture and the camera automatically selects the fastest sync speed

between 1/200 and 1/60 second that ambient light levels will allow. This provides the advantages of full

depth-of-ﬁeld control while the Expert exposure system uses multi-pattern metering or center-weighted

metering to automatically determine ambient exposure and the necessary ﬂash output.

Basically, the system is designed to reduce ambient light exposure by one stop (by increasing the shutter

speed) and, if possible, maintain it at this level for backlight, frontlight, and lowlight ﬁll-in. In backlight

and frontlight conditions, the ﬂash brightness is reduced from 1/4 to 3/4 stop to produce a pleasing subject

exposure.

The background will be up to 1-1/2 stops brighter than the subject exposure.

For indoor photography, ﬂash brightness is at its normal rating while the shutter speed is controlled to

reduce and maintain ambient light brightness by one stop. The slowest shutter speed available in A mode

is 1/60 sec. Ambient levels requiring longer speeds will be underexpose to a greater degree.

When the SPOT button is pressed for slow-sync ﬂash photography, ﬂash brightness is reduced by 3/4

stop and shutter is set to a speed slow enough to allow normal background exposure.

4.1.3 S Mode Flash

In this mode, any shutter speed between 1/200 sec. and 30 seconds can be selected by the photographer.

The 700si Expert Exposure system then automatically selects the appropriate aperture from within the lens’

working range.

Basically, the system is designed to reduce ambient light exposure of the subject by one stop (by closing

the aperture) and, if possible, maintain it at this level for backlight, and frontlight ﬁll-in. In these conditions,

the ﬂash brightness is reduced from 1/4 to 3/4 stop to produce a pleasing subject exposure. The background

will be up to 1-1/2 stops brighter than the subject exposure.

Shutter-priority ﬂash is best used when the ambient front or backlight is equal to or greater than the

subject brightness. If used in normal indoor ﬂash photography where the background is dark, the aperture

will remain wide open until the ambient light level approaches a normal ambient light, exposure. This

provides the least amount of depth of ﬁeld for the picture. If the indoor brightness is high enough or the

shutter speed selected is low enough to produce an ambient exposure without ﬂash, the metering system

treats the situation like a front- or back-light ﬁll-in situation by reducing both ambient and ﬂash exposure

as described above.

When the SPOT button is pressed, ﬂash brightness is reduced by 3/4 stop and the if the ambient light

is bright enough to require an aperture smaller than the maxxum for the lens in use, the lens’ aperture will

be opened toward achieving better background exposure. Once again, S mode is not recommended for this

procedure.

4.1.4 M Mode Flash

In this mode, both aperture and shutter speed (within maximum x-sync) are set by the photographer. The

ﬂash output is determined by the 700si’s metering system and regulated by its TTL ﬂash control system.

The photographer can manually adjust the ambient exposure by the shutter speed and aperture selected

and control automatic ﬂash brightness by using the camera’s ﬂash exposure override feature. The 5200i,

5400xi, and 5400HS ﬂash units can also be switched to manual operation and the level adjusted for special

applications.

4.1.5 Fill Flash

In P mode, whenever the 700si’s 14-segment honeycomb-pattern metering system detects that conditions

require additional light to balance the subject and background exposures, a dedicated, attached accessory

ﬂash will ﬁre automatically. When not normally called for in P mode, the ﬂash can also be ﬁred manually

by pressing and holding the ﬂash-control button while taking the picture. In A, S, and M modes, ﬁll-ﬂash