Here’s a very cool radio release trigger for Sony users. JJC JM-F2(II) Wireless Shutter Release For Sony is designed to trigger Sony cameras with a multi-interface remote port. This wireless remote system can trigger the receiver without direct line of sight up to 30 meters using 433MHZ frequency with 16 channels.
The JM-F2(II) receiver connects to the camera’s remote socket with the supplied JJC receiver cable to trigger the camera shutter at five modes: single shot, 5 seconds delay shot, 3 continuous shots, unlimited continuous shots and bulb shot. The receiver has a 1/4″-20 tripod mount socket on the bottom, so you can even mount the receiver onto a tripod. JM-F2(II) transmitter is able to fire multiple receivers at the same time. The receiver itself with the connecting cable can be used as a Wired Remote Switch, half press to focus, full press to take a photo.
16 Possible Radio Channels over 433MHz
Wireless function supports five modes: single shot, 5 seconds delay shot, 3 continuous shots, unlimited continuous shots and bulb shot.
Wired triggering allows you half press to focus, fully press to take photo, and wired triggering works even if the receiver battery is dead or missing.
Press the transmitter’s button half way to focus; press it fully to trigger the shutter.
The delay function gives you extra time to get into position.
With the JM-F2(II) you can control the length of the exposure remotely.
Two LED indicators confirm pre-focus and exposure when in the wireless mode.
Manufacturer lists compatibility for: Sony A7, A7R, A7S, A3000, A5000, A6000, A58, NEX-3NL, HX300, HX50V, RX100II and RX100III – but in theory it should work with any Sony camera with a multi-interface remote port. I’ll update this once I try it.