Flash range, External flash shooting, Information – Olympus E-PL2 User Manual
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EN
Information
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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 flash 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 flash 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 flash shooting
With this camera, you can use one of the separately sold external flash units to
achieve a flash suited to your needs. The external flashes communicate with the
camera, allowing you to control the camera’s flash modes with various available
flash control modes, such as TTL-AUTO and Super FP flash.
An external flash unit specified 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 flash to
the flash bracket on the camera using the bracket cable (optional). Refer to the
documentation provided with the external flash units as well.
Functions available with external flash units
Optional flash 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*)
a
FL-36R
GN36 (85 mm*) GN20 (24 mm*)
a
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 film camera).
*
•