Ttl-Flash Modes; Ttl - Metz MECABLITZ 58 AF-2 digital Manual De Instrucciones

5.2 TTL-flash modes

The TTL flash modes offer a very simple method of achieving very good flash
shots. In these modes, exposure readings are taken by a sensor built into the
camera, which measures the amount of light through the camera lens
(TTL = „Through The Lens"). Here the camera automatically determines the flash
performance required for a correct exposure of the shot. The advantage of the
TTL flash modes is that all factors influencing exposure (filters, change of apertu-
re and focal length with zoom objectives, extensions for close-ups, etc.) are
automatically taken into account in adjusting the flash light.
If the shot was correctly lit, the correct exposure indication
about 3 seconds (see 4.2).
The flash unit automatically supports the camera's TTL flash mode. There is no
special indication of the flash mode.
☞ Please note whether there are limitations for your camera in terms of
film sensitivity for TTL flash mode (for example, ISO 64 to ISO 1000; see
camera's operating instructions)! In analogue cameras there must be a
film in the camera to test the TTL function!
Preflash TTL and ADI metering
Preflash TTL and ADI metering are digital TTL flash operating modes and refined
versions of the TTL flash operation found in analogue cameras. When taking a
shot, an almost imperceptible measurement preflash is triggered by the camera
prior to the actual exposure process. The reflected light of the measurement pre-
flash is evaluated by the camera. Depending on the result of the evaluation, the
subsequent flash exposure is adapted by the camera to suit the given shot situa-
tion (see camera operating instructions for further details). In the case of ADI
metering, additional distance data from the lens is incorporated into the flash
exposure process. The selection and/or setting of the preflash TTL and ADI
metering operating modes are carried out on the camera (see camera operating
instructions).
The flash unit must be set to the TTL flash operating mode.
Setting procedure:
• Press the Mode
LC display.

TTL

• Set the
keys. The flash mode you choose is then highlighted.
The setting takes effect immediately.
will flash „OK" for
• Press the button
the normal view.
If the button
change back to the normal view after about 5
seconds.
If the shot was properly lit, the correct exposure indi-
cation will flash „OK" for about 3 seconds (see 13).
TTL flash mode
This analogue flash mode is supported by older analogue cameras. It is the nor-
mal TTL flash mode (TTL flash mode without preflash).
Setting procedure:
• Press the Mode
TTL
• Set the
choose is then highlighted.
The setting takes effect immediately.
• Press the button
If the button
view after about 5 seconds.
button until „Mode" flashes on the
flash mode using the and
to change the display back to
is not pressed, the display will
button until „Mode" flashes on the LC display.
flash mode using the and
to change the display back to the normal view.
is not pressed, the display will change back to the normal
Mode
TTL P
TTL HSS
Set
F 5.6
TTL
AZoom 35
2,0 m ISO 100
Mode Para Sel
keys. The flash mode you
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