The flagship Sony A7R II and A7S II cameras are significant achievements for Sony in terms of technical prowess, but upon release some cameras of this range had some issues with overheating when recording in 4K internally for extended periods of time, but now Sony has issues a firmware update to remedy this phenomenon.
The good news is that AVtec are bringing out a couple of very affordable monitors for those on a tight budget. The XHD070 and the AVtec XHD070 Pro both cost below £180 and feature ultra-thin 7-inch IPS displays with 1280 x 800 resolution and are packed with professional features for focus and exposure.