AHD camera image colors are vivid, while CVI camera image colors are subdued. We also tried to connect AHD and CVI together, we found:
AHD cameras connect to CVI DVR: B/W images, 3-5s images disappear, 1-2s images restore.
CVI cameras connect to AHD DVR: B/W images, no other problems. Resolution is basically equal CVI camera's resolution.