Guide Number of 45m at ISO 100 and 105mm

The Sony HVL-F45RM flash has a GN of 45m at ISO 100 and 105mm zoom. Ideal for both indoor and outdoor application, it provides powerful lighting at a 5500K colour temperature. Manual flash control is supported and power levels can be switched from 1/1 to 1/128 in 1/3 or 1/2 EV steps.

2.4 GHz Radio Transceiver with 30m Range

Its built-in 2.4 GHz radio transceiver has a 30m range for easy wireless control. You can use the flash as a radio commander/remote when used with Sony’s radio wireless system from. As a wireless commander, it works with 15 flashes in 5 groups or 3 groups in TTL mode.

Flexible Metering Support

The flash supports Sony’s P-TTL metering system which allows output to be accurately measured through the lens. Advanced Distance Integration (ADI) metering supports distance encoders used on cameras and lenses. It’s especially helpful in delivering correct exposure when shooting difficult subjects, like reflective surfaces.

Tilting Flash Head with 360° Rotation

Thanks to the 360° rotating flash head, you can easily control the direction of the light output, or even bounce the light off a wall or ceiling for softer lighting if you’re working indoors. The head also tilts 150° upwards and 8° downwards for even more flexibility in everyday shooting scenarios.

LCD and Quick Navi Interface

The flash unit’s LCD is bright, making it highly visible in many outdoor conditions. The menus are well organised in tabs for easy, intuitive operation. A single press of the 'Fn' button calls up the QuickNavi interface where you can access common settings easily. You can also customise the centre keys and control wheel with your own shortcuts to preferred settings.

1st and 2nd Curtain Sync and HSS

The flash supports 1st and 2nd curtain sync, as well as slow and high-speed sync on compatible cameras with TTL communication. This means the flash can sync with all shutter speeds, allowing you to focus on getting the shot you want with correctly exposed, well-lit subjects, no matter what lighting conditions you find yourself working in.

24-105mm Zoom Range with Auto Control

With auto zoom, the flash output automatically adjusts within its 24mm to 105mm range to match lens focal length and camera sensor size for optimal illumination. A pull-out diffusion panel allows the flash to cover a wide-angle of 15mm. Standard, Centre (guide number priority), and Even flash distribution settings can be used to adjust how the flash affects the scene or subject.

210 flashes and Fast Recycle Time

Powered by 4 x AA batteries (alkaline or rechargeable NiMH), the HVL-F45 flash delivers 210 full power flashes with up to 4 hours of use. Recycle times are quite fast and vary from 0.1-2.5 seconds. Continuous flash is also supported where it delivers 40 flashes at a rate of 10 per second.

Powerful Daylight Balanced LED Light

The LED flash has 10 power levels and outputs 400 lux at 0.5m. It’s daylight balanced with a 5500K colour temperature for more natural looking colours. For video application, it has coverage for 35mm lenses and can illuminate subjects about 1m away at ISO 3200.

Compact Water and Dust Resistant Build

The Sony HVL F45RM Flash has a compact dust and moisture-resistant build that’s 10% lighter than the previous model. Compatible with Sony’s MiShoe interface, it’s perfectly suited for the a7 series cameras, offering excellent performance with seamless control and camera communication.