External Flash with Wireless Radio Control

External Flash with Wireless Radio Control

This high-output GN281 flash offers the type of optimized performance and control that only a genuine Sony product can provide. It can be controlled directly from the camera and is small enough to fit in a pocket while offering professional durability as well as wireless radio communication for a wide range of applications.
External Flash with Wireless Radio Control

Small, powerful, reliable radio wireless flash

This high-output GN281 flash offers the type of optimized performance and control that only a genuine Sony product can provide. It can be controlled directly from the camera and is small enough to fit in a pocket while offering professional durability as well as wireless radio communication for a wide range of applications.

Effective overheating prevention

An optimized flash-control algorithm provides excellent flash performance while effectively preventing overheating, for long-term stability and reliability.

Stable radio wireless communication

The HVL-F28RM features stable radio wireless communication. One HVL-F28RM that will function as a commander can be mounted on a compatible camera2 and paired with other off-camera HVL-F28RM units that will function as a receiver. Radio communication provides reliable communication over longer distances than are possible with optical communication, even in bright sunlight or when there are obstacles between the camera and subject. Slow sync, rear-curtain sync, and multi flash are supported2.

Multi-flash radio control

When used as a flash commander, the HVL-F28RM can control up to 15 flash and/or receiver units in five groups3, 4 at distances of up to 114 ft (35 m)5 for extraordinary lighting-control versatility.

Comprehensive control from the camera

Flash compensation, light ratio, and other detailed flash parameters can be controlled directly from a compatible camera2, and a custom key assignment can allow adjustments to be made while looking through the viewfinder. Flash parameters are shown in the selected camera display language.

Lighting tailored to individual scenes

With powerful output that rivals the HVL-F45RM, plenty of light is available for bounce applications, and the flash angle can be set as required via 0-, 20-, 40-, 60-, 80-, and 120-degree click stops. A lock is provided at the 0-degree position to prevent unwanted angle changes in hectic shooting situations.

Metal shoe foot with rugged side frame

The Multi Interface Shoe features a newly developed metal shoe foot with rugged side frame, significantly increasing strength and reliability.

Reliable in harsh outdoor conditions

Like all of Sony's high-end flash units, the HVL-F28RM features a dust- and moisture-resistant design6 that contributes to high reliability in harsh outdoor conditions.

Direct light-level control

Dedicated + and – LEVEL buttons allow direct, speedy light output and flash-compensation control, and can also be used to control the same parameters on other wirelessly paired flash units for smooth, efficient workflow.

Through-the-lens (TTL) wireless flash

Flash output can be accurately determined by through-the-lens light measurement, even when shooting wirelessly. The position and direction of the flash can be adjusted to soften shadows and highlights when shooting a subject from the front, or to add shadows for a sense of depth when needed. Wireless flash-ratio control is available.

High-speed sync (HSS)2

Normal maximum flash sync speeds mean that the shutter speed must be stopped down when using daylight fill flash, making it difficult to produce background bokeh. High-speed sync allows the flash to be synchronized to the full range of shutter speeds2 so that large apertures can be used to create bokeh wherever desired.

Test flash mode

The test flash mode enables you to check shadows on the subject before taking photos, and also to check the light level using an external flash meter, which is essential for studio photography. The light level of the test flash depends on the light level setting in manual flash (M) mode, and the flash unit fires with a light level of 1/1 in through-the-lens (TTL) mode.

Multi/Micro USB terminal

The flash unit can be connected to a computer via its Multi/Micro USB terminal for convenient software updating.

Flash control based on face detection

The HVL-F28RM works with the face-detection capabilities of compatible cameras2 to balance flash output with ambient light conditions so that the subject's face is rendered with lifelike, accurate white balance.

Auto white balance adjustment

Color temperature information is transferred from the flash unit to the camera to ensure accurate white balance for natural-looking colors. With compatible cameras2 flash output is automatically balanced with ambient light conditions so that skin tones are rendered with ideal white balance.

Basic information
Dimensions (approx.) W 2.56 " x H 3.29 " x D 3.6 " (65.1 x 83.5 x 91.4 mm)
Weight (approx.) 7.8 oz (219 g) (only main unit)
Type Auto electronic flash (clip-on type) with pre-flash metering
Shoe type Multi Interface Shoe.
Flash head (light-emitting unit)
Maximum guide number 28 (Flash coverage setting 50 mm, ISO 100 m)
Flash coverage 50 mm, Angle of view at 24-mm focal length is also covered with the wide panel
Flash Duration (Approx.) Within 1.6 ms (1/1 MANUAL)
Color Temperature (Approx.) 5,500 K
Frequency (Approx.) 0.1–6.4 seconds (Alkaline battery) / 0.1–4.1 seconds (Ni-MH battery)7
Repetition (approx.) More than 110 times (Alkaline battery) / More than 130 times (Ni-MH battery)8
Continuous flash performance 40 flashes at 10 flashes per second9
Bounce flash Yes
Bounce angle Up 120 ° (0 °/20 °/40 °/60 °/80 °/120 °)
Test flash Yes
Flash control Flash control using pre-flash (P-TTL/ADI)
Flash compensation Yes10
Power level switching 25 levels (1/1-1/256) 1/3 steps
High-speed sync (HSS) Yes
Modeling flash Yes
Built-in wide panel Yes (24 mm)
Built-in bounce sheet Yes
AF illuminator
AF illuminator -
Operating Range (Approx.) -
Radio-controlled wireless function
Radio Control Wireless Function Yes (commander/receiver)11
Frequencies 2.4 GHz band
Channels 14 channels (Auto/Manual)
Communication Distance (Approx.) 114.83 ft5, 12
Groups 3 groups (TTL/MANUAL), 5 groups (group flash photography)
Maximum flash units 15 units
Lighting ratio control 3 groups (TTL)
Optical control wireless function
Optical Controlled Wireless Flash -
Channels -
Communication Distance (Approx.) -12
Groups -
Lighting ratio control -
LED light function
Center Luminance Intensity (Approx.) -
Lighting Distance (Approx.) -
Focal length supported -
Continuous Lighting Time (Approx.) -
Color Temperature (Approx.) -
Power level switching -
Other functions
Auto zoom control optimized for image sensor size -
Flash distribution setting -
Auto WB Adjustment Yes13
Custom key settings -
Memory settings Yes
Remote release -
LCD panel -
Charge progress indicator -
External connectors
Sync terminal -
Multi/Micro USB terminal Yes
Power source
Power source Two AA-size alkaline or Ni-MH batteries
External Battery Adaptor -
Other features
Dust and moisture-resistant design Yes6

  • Connector protect cap (1), Mini-stand (1), Carrying pouch (1), Dust- and moisture-resistant cover (1)