Sony HVL-RL1 Lighting Guide - a lighting and lighting accessories - Page 25

HVL-F20S

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HVL-F20S Products Designed exclusive for Sony E-mount cameras, the HVL-F20S external flash is the perfect accessory for extending illumination range and includes bounce capability and TTL auto metering. Specifications Flash • Flash Coverage: F4: 1m-5m • Guide Number: 20 Weights and Measurements • Dimensions (Approx.): (W x H x D) 2-3/8 x 2-7/8 x 2-1/8"; (60 x 71 x 53mm) • Weight (Approx.)(Main unit only): 2.3oz (63g) 20 36 42 43 56 60 Extends flash range beyond camera's included flash Though compact and lightweight, the HVL-F20S has a maximum range twice that of the included flash units of the NEX-3, NEX-5 and NEX-C3 cameras. This is represented as the guide number (GN) of 20 with a 50mm focal distance. Bounce flash enables shadowless indirect lighting When set to "indoor" shooting mode, the flash points up to bounce light off the ceiling for shadowless illumination of your subject. When set to the "outdoor" shooting mode, the flash directs light directly at your subject. Built-in diffuser for wide and telephoto shooting With the built-in diffuser, the flash illumination covers a wider angle of view or if users want to shoot at a greater distance, they can rotate the dial on the side of the flash unit to the "Tele" Position. While the "Tele" setting reduces the width of flash coverage, it extends the range to illuminate more distant subjects. Easy intuitive operation Unlike most external flash units, the HVL-F20S has no dedicated ON/OFF switch. Instead, power is automatically switched on simply by raising the flash unit into the shooting position. In addition, a switch on the side of the unit offers Indoor and Outdoor settings, making it easy to obtain flash illumination that suits the shooting situation. A charging lamp indicates when the flash is ready to fire. ADI Flash Metering System The ADI (Advanced Distance Integration) flash metering system offers the optimum flash metering and automatic white-balance compensation regardless of the background conditions or the subject's reflectance. ADI flash metering works in combination with cameras and lenses that incorporate a distance encoder. When used with these lenses, the camera calculates a guide number to control TTL (through the lens) flash metering. This guide number is calculated according to distance from the subject, ambient light and pre-flash reflectivity of the subject and the background. 48 49

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Products
HVL-F20S
Designed exclusive for Sony E-mount
cameras, the HVL-F20S external flash is
the perfect accessory for extending
illumination range and includes bounce
capability and TTL auto metering.
20
Specifications
Flash
•
Flash Coverage: F4: 1m–5m
•
Guide Number: 20
Weights and Measurements
•
Dimensions
(
Approx.
)
:
(
W x H x D
)
2-3/8 x 2-7/8 x 2-1/8";
(
60 x 71 x 53mm
)
•
Weight
(
Approx.
)(
Main unit only
)
: 2.3oz
(
63g
)
Extends flash range beyond camera’s included flash
Though compact and lightweight, the HVL-F20S has
a maximum range twice that of the included flash
units of the NEX-3, NEX-5 and NEX-C3 cameras. This is
represented as the guide number
(
GN
)
of 20 with a
50mm focal distance.
Bounce flash enables shadowless indirect lighting
When set to “indoor” shooting mode, the flash points up
to bounce light off the ceiling for shadowless illumination
of your subject. When set to the “outdoor” shooting
mode, the flash directs light directly at your subject.
Built-in diffuser for wide and telephoto shooting
With the built-in diffuser, the flash illumination covers
a wider angle of view or if users want to shoot at a
greater distance, they can rotate the dial on the side
of the flash unit to the “Tele” Position. While the “Tele”
setting reduces the width of flash coverage, it extends
the range to illuminate more distant subjects.
Easy intuitive operation
Unlike most external flash units, the HVL-F20S has no
dedicated ON/OFF switch. Instead, power is automatically
switched on simply by raising the flash unit into the
shooting position. In addition, a switch on the side of the
unit offers Indoor and Outdoor settings, making it easy to
obtain flash illumination that suits the shooting situation.
A charging lamp indicates when the flash is ready to fire.
ADI Flash Metering System
The ADI
(
Advanced Distance Integration
)
flash metering
system offers the optimum flash metering and
automatic white-balance compensation regardless of
the background conditions or the subject’s reflectance.
ADI flash metering works in combination with cameras
and lenses that incorporate a distance encoder. When
used with these lenses, the camera calculates a guide
number to control TTL
(
through the lens
)
flash metering.
This guide number is calculated according to distance
from the subject, ambient light and pre-flash reflectivity
of the subject and the background.
48
49