Motorola E815 / E816 Hollywood

I'm convinced I got an E815 with a bad camera (it takes worse pics than my previous V265 AND LG7000--pics have virtually NO definition regardless of light). I've seen pics from other E815 users that look obviously better online. So, my question is, how can I convince Verizon store support my camera is bad, and convince them to let me do an exchange through warranty (have had the phone about 2 months)? Any opinions would be appreciated!!!!!