Olympus E-PL2 - Manual (Page 105)

105 EN
Information
11
Flash range
Flash range can be calculated as shown below.
Flash range (m) =
GN (ISO 200) × ISO sensitivity factor
Aperture (f-number)
GN (ISO200)
Depending on fl ash output, the Guide Number (GN) may be from 1.4 (minimum) to
10 (FULL).
ISO sensitivity factor
ISO sensitivity (x)
K =
X
200
200 400 800 1600 3200 6400
ISO sensitivity factor (K)
1.0 1.4 2.0 2.8 4.0 5.6
Aperture (f-number)
Aperture can be set to values between the maximum aperture for the lens and f/22.
Check the maximum aperture for the lens.
Minimum range
The lens may cast shadows over objects close
to the camera, causing vignetting, or be too
bright even at minimum output.
Lens
Approximate distance at
which vignetting occurs
14 – 42 mm 0.35 m
17 mm 0.25 m
40 – 150 mm 1.0 m
14 – 150 mm Flash can not be used
Use optional off-camera fl ash units to prevent vignetting. To prevent photographs
from being overexposed, select mode A or M and choose a high f-number, or
reduce ISO sensitivity.
External fl ash shooting
With this camera, you can use one of the separately sold external fl ash units to
achieve a fl ash suited to your needs. The external fl ashes communicate with the
camera, allowing you to control the camera’s fl ash modes with various available
fl ash control modes, such as TTL-AUTO and Super FP fl ash.
An external fl ash unit specifi ed for use with this camera can be mounted on the
camera by attaching it to the camera’s hot shoe. You can also attach the fl ash to
the fl ash bracket on the camera using the bracket cable (optional). Refer to the
documentation provided with the external fl ash units as well.
Functions available with external fl ash units
Optional fl ash Flash control mode GN (Guide number)(ISO100) RC mode
FL-50R
TTL-AUTO, AUTO, MANUAL,
FP TTL AUTO, FP MANUAL GN50 (85 mm*) GN28 (24 mm*) D
FL-36R
GN36 (85 mm*) GN20 (24 mm*) D
FL-20
TTL-AUTO, AUTO,
MANUAL GN20 (35 mm*)
–
FL-14 GN14 (28 mm*) –
RF-11
TTL-AUTO, MANUAL
GN11
–
TF-22
GN22
–
The focal length of the lens that can be used (Calculated based on 35 mm fi lm camera). *
•