Front and Rear cameras can be selected at the touch of a button and NDICam features a 4 position quality vs frame rate slider to deliver optimum video suited to the quality of your wifi connection and your iPhone's processing performance. Depending on your iOS device, compression mode selected and Wifi network performance NDICam supports up to 1080 full HD resolution. Control of flashlight, touch to focus, focus lock, pinch to zoom and audio enable are also included. You can even use the phone's torch as a Tally Light, by covering it with a red gel. Note: Depending on the performance of your iOS device and your WIFI network, you may not see full frame rates when operating at maximum 1080 resolution with a full HD camera. Using HX3 mode will help if the bottleneck is your WIFI network. Note: NDI is a high bandwidth protocol designed for local area Gigabit networks. In order to see good results you will need a fast, uncontested wifi connection. If you see slow frame rates, try improving the wifi environment, with a better router, less interference, directional antenna or maybe switch to 5GHz if you are on 2.4GHz. . NB HX3 Ultra will use around 50mBits of bandwidth, so its lower than full NDI, but still quite high. Use one of the lower bandwidth HX2 modes if your network connection is struggling/ NDICam is also compatible with wired ethernet connections to iOS devices which can help deliver smooth video compared to a poor quality Wifi network. Good results have been seen with lightning to ethernet adaptors. You can now specify an NDI4 discovery server in the application settings. Note that you will need to restart the app for any changes to take effect. Specifying a discovery server will disable the standard mDNS (Bonjour) advertisement for the NDI Cam source, so your iOS device must be able to reach the discovery server one the network. If you experience problems - delete the Discovery Server entry and restart the app. NB: NDI HX3 Ultra mode requires a recent NDI 5 compatible receiver.