Olympus E-PL2 E-PL2 Instruction Manual (English) - Page 105

Flash range, External, ash shooting, GN ISO 200 × ISO sensitivity factor, Aperture f-number

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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) 200 400 800 1600 3200 6400 K = X ISO sensitivity factor (K) 1.0 1.4 2.0 2.8 4.0 5.6 200 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 14 - 42 mm 17 mm 40 - 150 mm 14 - 150 mm Approximate distance at which vignetting occurs 0.35 m 0.25 m 1.0 m 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 11 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. Information Functions available with external flash units Optional flash Flash control mode GN (Guide number)(ISO100) RC mode FL-50R TTL-AUTO, AUTO, MANUAL, GN50 (85 mm*) GN28 (24 mm*) D FL-36R FP TTL AUTO, FP MANUAL GN36 (85 mm*) GN20 (24 mm*) D FL-20 TTL-AUTO, AUTO, GN20 (35 mm*) - FL-14 MANUAL GN14 (28 mm*) - RF-11 TF-22 TTL-AUTO, MANUAL GN11 GN22 - - * The focal length of the lens that can be used (Calculated based on 35 mm film camera). EN 105

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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 speci
fi
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*)
FL-36R
GN36 (85 mm*) GN20 (24 mm*)
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).
*
•