Sony HVL-F20M Specification Guide
Extends flash range beyond camera’s included flash
Though compact and lightweight, the HVL-F20M has a maximum range twice that of the included
flash units of the NEX-6 or SLT-A58K and includes Sony's new Multi Interface shoe for expanded
compatibility. 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 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-F20M 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 quickly moves the flash from direct to bounce, 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
α 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.
Specifications
Flash
Flash Modes
Bounce Upward angle: 75 degrees
Flash Coverage
GN20 = up to 20 meters (65 ft) at ISO100 with 50mm lens
Guide Number
GN20
Number of Flashes
More than 90 times (Alkaline battery)
Power Source
2 x AAA Batteries; Alkaline, NiMH
Weights and Measurements
Dimensions (Approx.)
(WHD) 2 1/2 x 4 1/2 x 31/32 inches (62 x 114 x 24mm)
Weight (Approx.)
(105g) 3.7oz
Power
Battery Type
AAA Alkaline /AA Ni-MH - requires 2
General
Material
Poly-carbonate plastic
Operating Conditions
Flash Modes
Automatic Light Control
HVL-F20M
MI Shoe External Flash