professional video, and anyone who wants the best and greatest, should go with nothing less than 1080 i/p.
Lenses for digital video recorders vary by zoom level. A fixed lens with 10x optical zoom level or greater will suffice for any use. Professional videographers may want to look for a camera with interchangeable lenses but this is often only necessary for filmmakers.
The minimum sensor rating for home video users is 680,000 pixels for standard definition and two megapixels for HD. CCD standard sensors at 4mm are sufficient. Professional standards rise to a 6-8 mm sensor and CMOS chips.
The illumination rating helps users understand how well video is recorded by that device in low light. The lower the number, the less light is needed. Standard home video or budget cameras