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6.2
Using the integrated wide-angle diffuser / telephoto
lens cover
The wide-angle diffuser and the telephoto lens cover
change the beam angle of the flash unit. The wide-angle
diffuser enlarges it so that shots with focal lengths up to
24mm
1)
are also illuminated uniformly.
This requires a reduction of the guide number and hen-
ce the range as well. By contrast, the telephoto lens
cover bundles the light cone for focal lengths of 85mm
1)
and more, increases the guide number and hence
increases the range.
1) Focal length information based on 35 mm format
Wide-angle diffuser
When not in use, the integrated wide-angle diffuser
is pushed into the body of the flash unit below the
reflector cover.
• Pull the diffuser vertically out of the flash body and
allow it to fold onto the reflector cover of the flash
unit.
The diffuser is held in position by spring force.
• To remove it, proceed in the reverse order.
Telephoto lens cover
• Place on the reflector cover of the flash unit so that the
lens cover snaps into place.
• Pull to remove.
6.3 Flash exposure memory FE
Several Nikon, Sony and Canon cameras have a flash
exposure memory (FV memory).
This is supported by the flash unit in the Nikon i-TTL and
i-TTL-BL and in the Canon E-TTL flash modes.
It can be used to define and store the exposure level for
the subsequent shot before the shot is actually taken.
This can be useful when, for example, the flash
exposure has to be adjusted to specific details that may
not be necessarily be identical with the main subject.
This function is activated on the camera. The subject
details for the flash exposure are measured and brought
into focus by the cameraís AF sensor/metering window.
Pressing the camera’s AE-L/AF-L button (Nikon) or FE
button (Canon; the description may vary from camera to
camera; see the camera operating manual) causes the
flash unit to fire a test flash.
The stored metering value, for example “EL” or “FEL”,
is then displayed in the camera viewfinder.
