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Your SMDV B500 studio flash sits behind a softbox and you want to adjust power and mode from the camera instead of walking over every time. The SMDV B-Control TTL for Sony sits on your Sony's hot shoe and controls the B500 over 2.4 GHz radio – in TTL or manual, with high-speed sync up to 1/8000 s when you need it.
- Wireless trigger for the SMDV B500 TTL studio flash on Sony cameras
- TTL and manual mode, HSS up to 1/8000 s
- 2.4 GHz radio, up to 70 m range, 80 channels
- Just 64 g, runs on 2 x AAA
Full flash control from the camera
TTL for speed, manual for precision
When things move fast, let the camera handle exposure via TTL. Once you've found your light, switch to manual and work with fixed, repeatable settings.
Shoot wide open in bright sun
High-speed sync up to 1/8000 s lets you shoot outdoors at wide apertures and blur the background while the flash fills in your subject's face.
Reliable at a distance
2.4 GHz radio with up to 70 m range doesn't need line of sight. 80 channels help you avoid interference when several photographers share a location.
What it looks like in practice
Afternoon outdoor portrait
You're shooting a couple against the sun. The B500 with a softbox sits off to the side, the B-Control is on your Sony. You set f/2 and 1/2000 s, switch on HSS and adjust flash power right on the trigger until the light on their faces looks natural.
What you should know before ordering
Sony and SMDV only
This version works only on Sony cameras with the Multi Interface Shoe. There are separate versions for Canon, Nikon and Fuji. It controls the SMDV B500 TTL and doesn't work with flashes from other brands.
Check camera compatibility
Listed as compatible: Sony A99 II, A9, A7R, A7R II, A7R III, A7R IV, A7S, A7S II, A7S III, A7, A7 II, A7 III and A6000. For newer bodies, please ask us first whether there are any limitations.
Batteries not included
The trigger needs 2 x AAA 1.5 V batteries, which are not included – best to order them at the same time.
Technical details at a glance
- Model: SMDV B-Control TTL for Sony
- Compatible flash: SMDV B500 TTL
- Modes: TTL, M, TTL+HSS, M+HSS
- Sync speed: up to 1/250 s (TTL/M), up to 1/8000 s with HSS
- Radio frequency: 2.4 GHz
- Range: up to 70 m
- Channels: 80
- Groups: 4 (A, B, C, D)
- Power: 2 x AAA 1.5 V (not included)
- Dimensions: 54 x 42 x 80 mm
- Weight: 64 g
In the box
- 1 x SMDV B-Control TTL wireless trigger for Sony
SMDV's founder, Mr. JS Kim was a professional photographer and has been operating his own studio for 10 years when he decided to establish SMDV in 2003. Unsatisfied with his photographic equipment at the time, JS sought to develop and manufacture quality photographic lighting equipment that he himself would be happy to buy and use as a professional photographer. That has been his passion and unwavering goal ever since: to make quality equipment that he himself would be happy to use as a demanding professional photographer.
Since 2003, SMDV has helped photographers all over the world with many highly regarded photographic lighting accessories such as the FlashWave radio flash triggers, RFN-4 wireless shutter releases, and Speedbox softboxes. SMDV products are designed, engineered, and made in Korea.





