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External Flash with Wireless Radio Control
$399.99
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$399.99
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- Guide number of 45
- Dimensions (W x H x D): Approx. 2 3/4" x 4 1/2" x 3 1/2" (69.4 x 113.7 x 88.3 mm), Weight: Approx. 11.2 oz (317 g) (excluding batteries)
- Wireless radio control function
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- At 105 mm and ISO 100 in meters
- Up to 5 groups in GROUP mode setting, and up to 3 groups in TTL or Manual mode settings.
- According to Sony’s internal measurement conditions.
- Structure is designed for dust and moisture resistance but does not prevent all dust or moisture ingress.
- Wireless radio communications supports only compatible cameras. For compatible cameras, refer to support page of our web site. http://www.sony.net/flash/f45rm/
© 2017 Sony Electronics Inc. All rights reserved. Reproduction in whole or in part without written permission is prohibited. Sony is not responsible for typographical and photographic errors. Features and specifications are subject to change without notice.
Sony the Alpha logo and the Sony logo are trademark of Sony Corporation. All other trademarks are trademarks of their respective owners.
Sony the Alpha logo and the Sony logo are trademark of Sony Corporation. All other trademarks are trademarks of their respective owners.
Can the HVL-F45RM be used as both a commander and a receiver?
Yes. The HVL-F45RM has a built-in wireless radio control function and can act as either a commander or a receiver, making it a flexible choice for various multi-flash setups.
How many flashes can I control with the HVL-F45RM in wireless radio mode?
As a commander, the HVL-F45RM can control up to 15 compatible flashes or receivers organized in up to 5 groups (up to 3 groups in TTL or Manual mode settings).
What is the wireless radio range of the HVL-F45RM?
As a commander, the HVL-F45RM can control off-camera flashes at distances up to 30 m (98.4 ft), even in bright light or with obstacles between units.
Does the HVL-F45RM support both radio and optical wireless communication?
Yes. The HVL-F45RM offers built-in wireless radio control for reliable multi-flash use and also supports conventional optical wireless triggering for compatibility with other Sony systems.
Does the HVL-F45RM support high-speed sync and bounce flash?
Yes. The HVL-F45RM supports high-speed sync and provides sufficient illumination even with bounce lighting, helping you maintain exposure and creative control in various conditions.
What is the guide number of the HVL-F45RM?
The HVL-F45RM has a guide number of 45 (at 105 mm and ISO 100 in meters), giving it ample output for a compact radio-controlled flash.
Is the HVL-F45RM compatible with all Sony cameras for radio wireless control?
Wireless radio communication is supported only with compatible cameras. For a full list of compatible bodies, refer to Sony's support page for the HVL-F45RM.
How much does the Sony HVL-F45RM External Flash cost?
MSRP is listed as $399.99. Given that, these models can go on sale from time to time, and there are several other opportunities to save on price like through their group discounts for education, healthcare and military/veterans (ID.me & Unidays) along with their free loyalty program that gives up to 5% back in points.
How much does the HVL-F45RM weigh?
The HVL-F45RM weighs approximately 11.2 oz (317 g) excluding batteries, with dimensions of roughly 2 3/4" x 4 1/2" x 3 1/2" (69.4 x 113.7 x 88.3 mm).
Is the HVL-F45RM designed to resist dust and moisture?
The HVL-F45RM's structure is designed for dust and moisture resistance, though it does not prevent all dust or moisture ingress.
*FAQ generated on 07/23/2026. Financing, pricing and promotions may no longer apply.