viv·id ( P ) Pronunciation Key (vvd)
adj. viv·id·er, viv·id·est
Perceived as bright and distinct; brilliant: a vivid star.
Having intensely bright colors: a vivid tapestry.
Having a very high degree of saturation: a vivid purple
If you buy the above definition of vivid, then I'll go with mpenza's argument. "Vividness", tho I never really used that term on photos before, is more applicable to colours as you pointed out early, and is dependent on the lens, primary color filter, colour processing algorithm etc of the digital camera. Given the same camera, two pictures taken of the same scene at 2MP and 6MP should have no difference in "vividness". There might be a difference in sharpness, resolution, clarity of a 4R printout, but vividness should be the same.
I do think that a 2MP camera can produce more vivid colours than a 6MP one. As an example, sony cameras are known for their saturated and vivid colours. Say a 2MP sony cam would have taken pictures that are more "vivid" than a 6MP Canon 10D, which produces more neutral and lifelike colours.
adj. viv·id·er, viv·id·est
Perceived as bright and distinct; brilliant: a vivid star.
Having intensely bright colors: a vivid tapestry.
Having a very high degree of saturation: a vivid purple
If you buy the above definition of vivid, then I'll go with mpenza's argument. "Vividness", tho I never really used that term on photos before, is more applicable to colours as you pointed out early, and is dependent on the lens, primary color filter, colour processing algorithm etc of the digital camera. Given the same camera, two pictures taken of the same scene at 2MP and 6MP should have no difference in "vividness". There might be a difference in sharpness, resolution, clarity of a 4R printout, but vividness should be the same.
I do think that a 2MP camera can produce more vivid colours than a 6MP one. As an example, sony cameras are known for their saturated and vivid colours. Say a 2MP sony cam would have taken pictures that are more "vivid" than a 6MP Canon 10D, which produces more neutral and lifelike colours.