55
As the measurement will also take into account the available
illumination in addition to the flash output, it is not unusual to be
able to extend the range to more than 3 meters beyond the
theoretical maximum yielded by the flash/guide number formula.
In addition, when using TTL flash you can adjust the aperture as
desired and the camera and flash will sort out the correct
exposure for you (within the range of the flash of course). This
permits you to freely bounce the flash emission off a ceiling, wall
or nearby reflective surface and not have to worry about
complicated calculations to compensate for the diffusion of the
light off the reflecting surface.
You can also use the flash compensation feature on the camera
as well as the flash bracketing (FLASH BKT) option to fine-tune
flash exposures and/or to obtain a sequence of exposures at
differing illumination levels and pick the winner from the results.
TTL flash operates on P, S and A modes.
POWER USER TIP: When photographing medium to close-up portraits
with TTL flash, use the flash exposure compensation facility to reduce
the flash output by between 1 to 1.5 EV values. This provides a far
more natural looking skin tone and a more flattering portrait.
(UMPg79)
REMOTE (WIRELESS) FLASH SYSTEM
Remote control operation of dedicated flash units, such as that
offered by the E-3 via its pop-up flash unit and the Olympus FL-R
flash unit range, has opened up an entirely new vista in
photography.
Now, instead of having to cast light from your shooting position
onto a distant subject, it is possible to place the flash unit within
range to the subject and to move the camera to a more