Records generally use business-class cameras, mostly small HD.
Sony's Z 1C, Z5C and FX 1000E are characterized by high standard definition and strong compatibility.
Or Panasonic's 155, you can only shoot HD.
And SD 250, 198 and so on.
If it is a program, such as a wedding video, you can use 5D2 or 7D, which is effective and cheap.
The parameters of these cameras can refer to my Baidu space, which has a detailed introduction.