You will need an otg cable usb cable for your camera and the app dslr controller.
Android tablet as dslr field monitor.
Use your android phone or tablet for nikon camera as a preview field monitor.
Make sure it supports your camera before buying.
Field monitor paid for ios devices.
A neat alternative for nikon cameras to other expensive field monitors.
In the next step head over to your android or ios device open the wifi from the settings menu and connect to the wifi hotspot created by your dslr for the wifi password punch in the encryption key that you received on the dslr screen.
In fact this app gives you a lot more control over the camera rather than just being a field monitor.
And that s it now if you open the canon camera connect app it ll automatically detect your dslr and ask you whether you would like to preview.