The MY17 camera is adequate during the day. It's not super crisp, but it's just a backup cam afterall...meaning, I don't need to read street signs through it for god's sake. However, at night it is basically useless and I've come to conclude that it's a light sensitivity issue.
Via an install of Rigid's SRQ LED pod, I've been able to greatly increase the use of the camera at night. The camera is very sensitive to foreground lighting, so you'd need to carefully limit the amount of light directly behind the vehicle if you wanted to see things in the distance (i.e. reflections off the bumper greatly damper the ability to see items more than a few feet behind the vehicle).
Hers: 2009 TSX CU2 Tech, CBP w/ Parchment
Mine: 2017 MDX SH-AWD Tech, LSM w/ Graystone
Gone: 2013 F150 SCrew Platinum tuned EcoBoost