The Zacuto does cost a few dollars, but you will be very glad to have spent the money when it comes to monitoring your image and keeping everything sharp, and well exposed. I use the Gratical HD it is a little large and powers from a Canon LP E6N for a long time, or when I"m working with an Anton Bauer system camera I use a D Tap. The features in the Gratical are many and you can customize the features you need. The plus with the Gratical HD versus the Gratical Eye is you can power the unit from one Canon LP E6N and also use SDI or HDMI to connect to your camera, the outputs also loop through for another device if needed. I paid $1250.00 used, with an Axis arm a year ago. For outside, or anywhere you will be glad you have it.