Maintenance
Fixing Dash Cam Glare and Reflections
Glare from the dashboard and reflections in the windshield are among the most common footage complaints, and both have straightforward fixes.
Add a CPL filter
A circular polarizing filter is the most effective fix, cutting the reflection of your dashboard off the windshield for clearer daytime footage.
Reduce dashboard reflections
A dark, non-reflective dashboard mat reduces what the windshield can reflect. Removing bright objects from the dash helps too.
Position and clean
Mounting the camera close to the glass and keeping both the lens and windshield clean minimizes haze and stray reflections.
A real CPL filter to consider
The CPL Filter for 70mai Dash Cams is a model-specific example — buy one matched to your camera so it fits the lens exactly.
Frequently asked questions
Does a CPL filter work on any dash cam?
No — CPL filters are typically sized and threaded for a specific camera model, so buy one matched to your exact model rather than a generic filter.
Will a dashboard mat really reduce glare?
Yes, noticeably — a dark, non-reflective mat reduces what the windshield can reflect back into the lens, and it costs far less than a filter.