Hello Dilip Jagadeesh.
If you are using the Arduino Board for the Edison, there are some shields for Arduino, unfortunately there is not an official module camera yet.
I hope this is useful, for more details I recommend you to check Edison | Intel Communities.
Hi, Dilip. You may also want to try github.com/drejkim. Esther has recommended USB cameras for face detection, for example. http://drejkim.com/ is also a good place. There really isn't a “best camera” that we can suggest. Often "best" is very dependent on it being the best one you are willing to buy. Hope these suggestions help! LynnZ.