Manual Ttl Flash Exposure Correction; Correct Exposure Indication In Ttl Flash Mode (Fig. 7); Manual Flash Mode - Metz MECABLITZ 44 AF-4 Olympus Bedienungsanleitung

4.2 Manual TTL flash exposure correction

The TTL auto flash mode of most cameras is matched to a 25% degree of
light reflection by the subject (average amount of light reflected by subjects
shot with flash). Consequently, a dark background that absorbs a gread deal
of light or a bright background that reflects a great deal of light, can result in
under- or overexposure, respectively.
To offset this effect a correction value can be set on some cameras to manual-
ly match the TTL flash exposure to the photographic situation. The actual
extent of correction depends on the contrast prevailing between subject and
background. The correction value is set on the camera (see the camera's ope-
rating instructions).
A dark subject in front of a bright background: Positive correction
value. A light subject in front of a dark background: Negative correc-
tion value. Correcction value settings can change the maximum flash
range indicated by the flash unit's LC display and match it to the
given correction value (depends on the camera model).
Exposure correction by changing the lens diaphragm is not possible because
the camera's automatic exposure system will regard the changed diaphragm
as the normal working aperture.
After the exposure do not forget to cancel the TTL flash exposure cor-
rection on the camera !
Some cameras (z.B. E-1 and E-300) permit the correction value to be also set
on the flash unit:
Settings on the flash unit:
• Mount the flash unit on the camera.
• Switch on the flash unit and the camera.
• Lightly touch the camera's shutter release to induce a data exchange bet-
ween the flash unit and the camera.
• Continue depressing the „Select" key combination (= „Mode" key
+ „Zoom" key (Fig.2) ) until EV (Exposure Value) is indicated on the
LC display. Alongside EV, the set correction value is flashing on the display.
• While the correction value is flashing, a positive value can be adjusted
with the „Zoom" key
(Fig.1).
The setting range for the correction value extends from –3EV to +3EV in 1/3
stop increments (0.3 EV). The setting becomes immediately effective. After
approx. 5 sec. the LC display returns to its normal state. EV and the correc-
tion value remain indicated on the flash unit's LC display.
Cancelling manual TTL flash exposure correction on the flash unit
• Continue depressing the „Select" key combination(= „Mode" key
+ „Zoom" key (Fig.2)) until EV is indicated on the LC display.
• The set correction value flashes alongside EV on the display.
• While the correction value is flashing, set the correction value at 0.0 with
the „Zoom" key (Fig.2) or the „Mode" key
manual TTL flash exposure correction.
The setting becomes immediately effective. After approx. 5 sec. the
LC display returns to its normal state. EV and the correction value 0.0 are no
longer indicated.

4.3 Correct exposure indication in TTL flash mode (Fig. 7)

The "o.k." correct exposure confirmation only appears in the flash unit's
LC display if the shot was correctly exposed in TTL flash mode.
If "o.k." is not displayed after exposure, then this means that the shot was
underexposed. The shot will then have to be repeated with the next smaller
f-number (e.g. f/8 instead of f/11) or the distance to the subject or the
reflecting surface (e.g. when bouncing the flash) must be reduced. Please
observe the maximum flash range given by the flash unit's LC display (see
6.3.1).

4.4 Manual flash mode

Set "A" aperture priority or manual mode „M" on the camera. Select the
(Fig.1)
aperture and shutter speed (with „M") on the camera according to the given
photographic situation (see operating instructions of the camera).
(Fig.2), and a negative value with the „Mode" key
(Fig.1), thereby cancelling
(Fig.1)
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