The blackmagic ursa viewfinder is an ideal accessory for videographers looking to do a lot of over the shoulder or tripod shooting with their ursa camera it includes a full hd oled colour display and true glass optics for perfect focus simply plug it into the power and sdi viewfinder output then start shooting the viewfinder even features a sensor that turns off the screen when youre not using it to save power and extend the life of the oled screen