[bencpeters]

Don't forget that in some areas of the country, we get snow pretty regularly - in my experience back-up camera lenses get completely covered by road grit in snowy zones pretty quickly - makes it hard to rely on for something critical like highway visibility for a few months a year.

[RealGeek]

It is not an issue at all. It happened 3 times with me during the whole winter, and I quickly wiped and cleaned the lens. The windows and mirrors get dirty too, we often clean them.

[dfc]

When you say "it happened three times" this whole winter do you mean "it snowed three times"? I live in Syracuse, NY. We get 100+ inches every year, so I have some experience with the slushy salt+sand mixture that covers everything near a road in the winter. You can clean your car all you want but as soon as you spend 2 minutes driving a lot of the salt+sand+slush is back. How do you clean the lens while driving?