Here's a comparison of my ELR's reverse camera at night (blurry image) to my Toyota Rav4 EV's reverse camera under the exact same conditions (just different sides of the driveway).Back-up camera is waaaaaaaay better than my '11 Volt's was. Better than the wife's 535 wagon too.
Have a similar complaint on the dimming though. On the Volt, I could dim the screens to acceptable night-time levels. I can't quite get as low on the ELR, even in the "off" position. I click it up just above off though, otherwise you lose the cool-blue footwell and door lamp strips.
Cadillac should be ashamed and embarrassed that a $50k compliance car (which one can buy currently for ~$38k after non-tax incentives) has such a fundamental feature like this that is so much better than my $79k car. The Volt's camera curse continues...alas.