I wonder if the 4K HD camera you want to buy is a professional machine or a home machine? If it is a home computer, it is recommended that:

Sony FDR-AXP55 camera.

This kind of camera belongs to the top home computer above the current home computer, and it is the most popular home camera with very good definition at present. Those so-called wedding shoulder pickers, although not as effective as it, are also very expensive.