Jay said:"HD cams" typically refers to digital video cameras. As I said after the sentence you quoted, film has a higher resolution than the HD standard (assuming we're talking about 35mm).
I guess that makes sense. And, yeah, I was referring to 35mm.
Hmm, for me the most striking difference between "HD cams" and traditional film cameras would be the way the image is captured and the resulting differences in the look of everything. (That probably has to do with some electrically manipulated surface inside "digitial" cameras that I've not looked into.) The look of digital images often has a slight, plastic look to everything that is odd.