Sony HVL-F45RM is a radio-enabled compact flash

Sony's HVL-F45RM has a small form factor, an LED lamp and built-in radio.

Sony HVL-F45RM

Sony has announced a new flash, the HVL-F45RM, with a compact size designed to complement the company’s smaller mirrorless cameras.

The Sony HVL-F45RM has built-in radio functionality compatible with the new FA-WRC1M wireless controller and FA-WRR1 receiver. It is Sony’s first flash with built-in radio. The operating range is up to 30 metres (100 feet) with 14 channels and 3 groups.

Sony HVL-F45RM

As a flash, the HVL-F45RM has a guide number of 45 (105mm, metres, Iso-100), a tilt-swivel head, a large LCD control panel on the back and a recycle time of 2.0 seconds at full power with NiMH batteries.

You get TTL exposure control and high-speed sync, for automatic metering and synchronisation at fast shutter speeds. These features also work via radio. Manual mode offers adjustment in 1/3-stop increments down to 1/128 of full power. The zoom range is 24รขโ‚ฌโ€œ105mm and will automatically adjust to match different sensor sizes.

Sony HVL-F45RM

You can also use the HVL-F45RM as a video light (well, at a push) thanks to an LED lamp built into the body. According to the manufacturer specifications, it will last for four hours on a set of AAs and puts out 400 lux (0.5m) / 100 lux (1m), which is good to light a subject one metre away at Iso-3200, f5.6 when recording video.

Sony HVL-F45RM

The whole device is sealed against dust and moisture, and measuring 69.4 × 113.7 × 88.3mm, is reasonable compact in dimensions. Firmware updates are possible via the micro-USB port.

Priced $400 (US) or $550 (Canada), this is a relatively expensive flash compared to other small-form-factor radio flashes for Sony. Rivals include the Godox TT350S and the Nissin i60A.

You can pre-order the Sony HVL-F45RM now from Adorama, B&H Photo and other dealers. The product will ship on 5 April 2017. For more technical information, visit the manufacturer’s product page.

David Selby
David is a keen photographer and has been editor of Lighting Rumours since 2010. When not writing about lighting, he works as a data scientist at the University of Manchester, UK.