Do I need 1080P, or is lower resolution fine for a backup camera?

1080P is now standard at almost every price point and is worth having, but resolution alone doesn't determine usable image quality. Sensor type (CMOS starlight/CCD), low-light performance, and the monitor's panel quality matter as much or more. Reviewers in our pool repeatedly note that some 1080P-labeled budget cameras still wash out in bright sun or smear at night, so cross-check night-vision feedback specifically.