Flash Range Indication; Automatic Adjustment Of The Flash Range Indication; Manual Adjustment Of The Flash Range Indication; Fee" Error Indication On The Flash Unit's Lc Display - Metz MECABLITZ 58 AF-2 Nikon Bedienungsanleitung

16 Flash range indication

A F 4.5
14 m
AZoom 70
14 m ISO 200
most photographic situations. Strong deviations from this reflection factor, as in
the case of highly reflective or poorly reflective subjects, may affect the flash
range.
In TTL and automatic flash mode, the subject should be in the middle third of the
indicated range. This will give the automatic exposure control sufficient scope
for compensation.
To avoid overexposure, the minimum distance from the subject should be no less
than 10% of the indicated value. An adjustment can be made to a particular
photographic situation by changing the aperture setting, for example.
In manual flash mode M, the distance that must be maintained from the subject
for correct flash exposure is indicated. An adjustment to the photographic situa-
tion at hand can be achieved by, for example, changing the aperture setting on
the lens and by selecting either full light output or „P" for a partial light output
level.
The flash range can be expressed in either meters (m) or feet (ft) accor-
ding to the chosen setting (see 7.7). There is no flash range indication in
remote mode or when the main reflector is swivelled or tilted.

16.1 Automatic adjustment of the flash range indication

Group B, C, D and E cameras transmit to the flash unit the flash parameters for
ISO film speed, focal length of the lens (mm), aperture and exposure correction.
The flash unit automatically adjusts its settings accordingly. The maximum flash
range is calculated from the flash parameters and the guide number and indica-
ted on the display.
This requires an exchange of data between camera and flash unit, effected for
example by tapping the shutter release.
Automatic adjustment of the maximum flash range display requires that the
camera be equipped with a suitable CPU lens (see 6).
The maximum flash range is indicated on
the display panel of the flash unit. The
value indicated relates to subjects with a
reflection factor of 25%, which applies to

16.2 Manual adjustment of the flash range indication

If the flash unit is used with a Group A camera, then zoom position, ISO film
speed and f-stop parameters must be adjusted manually on the flash unit if the
flash range indication is to be reliable (see Chapter 6).
16.3 „FEE" error indication on the flash unit's LC display
On some cameras and in some camera modes (for example, program „P", vari-
programs, „S" shutter priority mode), it is necessary to set the aperture ring of
the lens to the maximum f-number. Otherwise the error message „FEE" will
appear on the LC display of the flash unit or camera. If this occurs, check the
settings on the camera or the lens (see the camera's operating instructions).

16.4 Guide number indication when using lenses without CPU

Lenses without CPU (i.e., without electronic data transmission) do not transmit
information about focal length or the aperture setting to the camera. If such a
lens is used with a Group B, C, D or E camera, then the flash unit will receive
only ISO data from the camera. The position of the main reflector must be adju-
sted manually (see 6.3).
With some cameras the flash unit's LC display will, in this case, show the guide
number for the current setting instead of the distance. The maximum flash range
is derived from the equation:
guide number
Maximum flash range = — — — — — — — — —
aperture
Guide numbers are not displayed when the main reflector is tilted down.
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