Ttl- Flash Mode; P-Ttl Flash Mode - Metz MECABLITZ 58 AF-2 Pentax Bedienungsanleitung

The flash parameters for ISO, aperture and lens focal length or mirror position
are set automatically, if the camera transfers the necessary data to the flash unit.
The range indicator on the display of the control unit matches the flash parame-
ters transferred from the camera.
If the camera does not transfer one or more flash parameters to the flash
unit, you will have to adjust these settings by hand (see 6).

5.2 TTL- flash mode

The TTL flash mode offers a very simple method of achieving excellent flash
shots. In this mode, exposure readings are taken by a sensor built into the
camera which measures the amount of light through the camera lens (TTL). The
electronic control circuit within the camera transmits a stop signal to the flash
unit after sufficient light has been emitted, instantly interrupting the flash. The
advantage of this flash mode is that all factors influencing correct exposure (fil-
ters, change of aperture and focal length with zoom lenses, extensions for close-
ups, etc.) are automatically taken into account.
TTL flash mode is supported by all modes of camera operation.
Different types of digital cameras only support the P-TTL flash mode (see
5.3)!
Setting procedure:
• Press the button until „Mode" flashes on the
Mode
LC display.
• Set the TTL flash mode using the
keys. The flash mode you choose is then highlighted.
The setting takes effect immediately.
• Press the button to change the display back to
the normal view.
If the button is not pressed, the display will
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 14).

5.3 P-TTL flash mode

The P-TTL flash mode with measuring preflash is a further development of the
standard TTL flash mode of analogue cameras. During the shot and before the
actual exposure, one or more almost indiscernible preflashes are executed by
the flash unit. The light reflected by the preflash is evaluated by the camera.
According to the evaluation, the subsequent flash exposure will be adjusted by
the camera to suit the situation (see the camera's operating instructions).
Depending on the camera model, the preflashes precede the main flash
by such a short interval that they practically cannot be distinguished
from the main flash! The preflashes do not contribute to the lighting of
the shot.
Mode
TTL P
A
Set
and
F 5.6
TTL
AZoom 35
12 m ISO 100
Mode Para Sel
115