Megapixel IP cameras vs. HDTV IP cameras
There is no dispute that megapixel IP cameras and HDTV network cameras offer the best image quality on the market. However, there is some confusion surrounding the difference between high definition (HD) cameras and megapixel cameras. These terms are sometimes used interchangeably, but megapixel and HD cameras aren't exactly the same.
To summarize, all HD cameras are megapixel cameras, but not all megapixel cameras are HD cameras.
Megapixel cameras have a sensor with a minimum of 1.3 million pixels; multi-megapixel cameras have more. For example, 2-megapixel cameras have sensors with at least 2 million pixels, right on up 10-megapixel cameras.
Meanwhile, HD cameras refer to a certain classification of megapixel cameras. High definition is a term used to describe two resolutions: 720p and 1080p. But it actually means more than just that; high definition also encompasses a set of video quality standards set forth by the Society of Motion Picture and Television Engineers.
When you buy an HD camera, you can rest assured that it adheres to the tenants of the SMPTE HDTV format, including:
-16:9 aspect ratio in full frame rate 30/25
-720p or 1080p resolution
-excellent color fidelity
Megapixel IP cameras and HDTV IP cameras both produce excellent quality images. Because some multi-megapixel cameras offer a higher resolution than HD cameras, you may prefer the ultra detailed images they can deliver over the benefits of HD cameras. To be sure, a multi-megapixel camera could offer equal color fidelity as well. But only cameras with a resolution of 720p or 1080p are HD cameras.