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electronic control circuit within the camera transmits a stop signal to the
mecablitz as soon as the film has been exposed by the correct amount of
light, thereby instantly interrupting the flash. The advantage of this flash
mode is that all factors influencing correct exposure of the film (filters,
change of aperture and focal length with zoom lenses, extensions for close-
ups, etc.) are automatically taken into account. You need not worry about
setting the flash, the camera’s electronic system automatically determines the
correct amount of flash light required. For the maximum flash range please
observe the distances given in the LC display of the mecablitz (see 5.4) and
the information in section 5.5. If flash exposure was correct, the LC display of
the mecablitz indicates “o.k.” for about 3 sec. (see 4.4).
The TTL flash mode is supported by all camera modes (e.g. Program “P”,
Aperture Priority Mode “A”, Shutter Priority Mode “S”, Vari or Scene Modes,
Manual Mode “M”, etc.).
For analog cameras, a film must be loaded in the camera to test the
TTL function. When selecting the film please check whether limits re-
garding maximum film speed or ISO value (e.g. maximum ISO 1000)
are applicable to the given camera when in TTL mode (refer to the
camera’s operating instructions)!
Various digital SLR cameras (e.g. series D1 and D100 models) do not
support the normal TTL flash mode of analog cameras. In such an
event the D-TTL flash mode (see 4.2) or D-TTL 3 D flash mode (see
4.2.1) must be used.
Setting procedure for TTL mode
• Turn on the mecablitz by its main switch.
• Continue depressing the “Mode” key until “TTL” flashes on the LC display.
• The setting becomes immediately effective. The LC display returns to its nor-
mal state after approx. 5 sec.
Pronounced differences in contrast, e.g. a dark subject in snow, may make it
necessary to correct the exposure settings (see 4.3).
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4.1.1 Automatic TTL fill-in flash in daylight (Fig. 5 and 6)
Most camera models automatically activate the fill-in flash mode when in
auto program mode “P”, Vari or a Scene mode in daylight (see the camera’s
operating instructions).
Fill-in flash overcomes troublesome dense shadows and produces a more
balanced exposure between subject and background with contre-jour shots.
The camera’s computer-controlled metering system sets the most suitable
combination of shutter speed, working aperture and flash output.
Ensure that the contre-jour light source does not shine directly into the
lens as this will mislead the camera’s TTL metering system!
In this instance there is no setting or display on the mecablitz for automatic
TTL fill-in flash.
4.1.2 Matrix-controlled TTL fill-in flash
In this flash mode the subject and the background lighting are automatically
balanced without overexposing the subject. The camera establishes the ex-
posure setting for the ambient light by matrix metering.
Various Nikon cameras support the matrix-controlled fill-in flash mode (see
operating instructions of the camera and Table 1).
Some cameras (F4 or F4s for example) do not support the matrix-con-
trolled TTL fill-in flash mode for SPOT exposure metering. This flash
mode will then either be automatically cancelled or cannot be acti-
vated, so that the normal TTL flash mode will be performed.
When using cameras of Group A (see Table 1), this fill-in flash mode is set
and displayed on the mecablitz.
With cameras of Group B (see Table 1) the setting is made on the camera, or
this flash mode is automatically activated by the camera (see operating in-
structions of the camera). There is no such setting made or indication given
on the mecablitz.
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