The Atomos Ninja V is a monitor/recorder, perfect for DSLR videographers. 5" displays are an ideal attachment for both cameras and gimbals. It is also extremely affordable!
Check out this user review for the Atomos Ninja V.
Record like a Ninja!Atomos.com
Eliminate your camera’s internal compression and time limits – record up to 4Kp60 10-bit HDR video direct from your camera's sensor over HDMI 2.0. Teamed with a 1TB AtomX SSDmini you can now achieve up to 150 minutes of 4K recording on a single drive! And when you’re done, your edit-ready ProRes and DNxHR recordings are stored on affordable SSD drives.