The app for tethering are many, some free, others for a fee.
Triggertrap is one of them, the coolest and the more original.
This is not an app specifically for tethering, but it supports some new and original features.
Triggertrap requires a special cable to connect your smartphone to your camera (average price around 30 pounds).
The company has been very helpful to send a test kit for my Nikon D600, it arrived with a convenient “smartphone holder” bracket, to be mounted on the flash shoe.
Simply connect the dedicated cable to the camera (in my case the GPS port) and on the phone, through the audio jack.
The transmission of informations takes place via this connector, you only have to remember to turn up the volume of the smartphone, then you are ready to use the app.
There are all useful features for remote shooting: that when you press the button, once you release the B mode and the timed release.
The timelapse section is fantastic, in ways ranging from classical, until timewarp and bramping.
You can then activate the shutter with a sound, adjusting the microphone sensitivity, or create HDR sets beyond the limits imposed by bracketing the camera.
Then there are two utilities: the computer of sunrises and sunsets, which also uses the GPS, and an ND filters calculator.
Finally, if you want to take advantage Triggertrap remotely, you can use your smartphone connected to the camera in slave mode and another as a master, in Wi-Fi.
In the coming days I will have the chance to try Triggertrap on the field, but I already know that, including timers, and HDR timelapse “extremes” to which I will definitely entertain me!