Equipped with a 2.4 GHz radio transceiver, the HVL-F45RM is able to operate as either a radio commander or remote as part of Sony's radio wireless system, including the FA-WRC1M Wireless Radio Commander and FA-WRR1 Wireless Radio Receiver. This system has an operating range of 98' and does not require line-of-sight. Also, it will support up to 15 flashes in five groups on one of 14 channels. Additionally, it has full support for Sony's P-TTL / ADI metering system, including high-speed sync and ratio control.

Compatible Cameras:

• a7 II
• a7R II
• a7S II
• a99 II
• a6500

• Advance Distance Integration (ADI) flash metering works with cameras and lenses with distance encoders to more accurately balance flash output with ambient light and subject reflectivity by taking camera-to-subject distance into account

• Support for optical wireless TTL in both commander or remote modes with up to three groups in one of four channels.

• Compared to its predecessor, the HVL-F45RM has a reduction in size and weight of greater than 10%, making it ideal for use on smaller camera bodies, such as the mirrorless a7 series.

• Guide number of 148' at ISO 100 and 105mm with the ability to produce approximately 210 full-power flashes on a single set of batteries.

• The flash is equipped with an 5500K LED light with an output of 400 lux at 1.6' / 0.5m and 10 power levels. It has coverage for 35mm lenses and will illuminate subjects approximately 3.3' / 1m away when set to ISO 3200 and f/5.6 during movie shooting. Additionally, it will run for about 4 hours on a fully charged set of batteries.

• Flash head offers -8 to 150° of tilt along with a total of 360° of rotation for full bounce flash capabilities.

• Offers a high-visibility dot-matrix LCD and tab-structure menu. Also, the main Quick Navi control interface provides more direct control over commonly accessed settings. Additionally, the main keys can be reprogrammed to rapidly access specific settings.

• Can fire continuously for up to 40 flashes at a rate of 10 flashes per second.

• Slow, high-speed, 1st and 2nd curtain sync is supported on cameras with TTL communication.

• Zoom head of 24-105mm as well as a pull-out diffusion panel which covers 15mm.

• Flash distribution settings of standard, center (guide number priority), and even (wide angle priority) will adjust how the flash affects the scene or subject.

• Two memory settings are available for near instant recall of different setups.

• Manual flash control from 1/1 to 1/128 power in 1/3 or 1/2 EV steps.

• Recycle time of 0.1-2.5 seconds.

• Pull-out bounce card.

• Micro-USB port can be used for firmware updates.

• Compatible with Sony Multi Interface Shoe.

• Dust and moisture-resistant construction for operating in less-than-ideal environments.