Shopping for a dash cam usually means scrolling through a wall of specs — resolution, megapixels, night vision, loop recording — without much sense of which ones actually matter day to day. Here's a more practical way to look at it.
Resolution matters less than you'd think, past a point
Full HD is enough to read most license plates in decent lighting. Beyond that, higher resolution helps most in low light and at greater distances, but it also means larger file sizes and, sometimes, more aggressive loop-recording overwrite. It's a real factor, just not the only one worth chasing.
Night performance is where cameras actually differ
Two cameras with the same resolution can perform very differently after dark. A dedicated night vision dash cam is worth prioritizing if you drive at night regularly, since this is where cheaper sensors tend to fall apart.
Loop recording and storage
Dash cams overwrite old footage automatically once the memory card fills up, which is normal and expected — the question is whether important footage gets protected. Look for automatic event locking (usually triggered by impact detection), which is what actually saves the clip you need instead of letting it get overwritten a few hours later.
One camera or more than one
A single front-facing camera covers the most common scenario — an incident ahead of you. If you also want visibility on what's happening behind or inside the car, a dual-lens dash cam covers both angles at once. We go deeper on this specific decision in do you really need a front and rear dash cam.
Wifi and app connectivity
This isn't about convenience so much as access — a WiFi-enabled camera like the WiFi dash cam recorder lets you pull footage to your phone on the spot, rather than needing to remove the memory card every time you want to check something.
The honest bottom line
For most drivers, decent night performance and reliable event locking matter more than chasing the highest resolution number on the box. Start there, then decide if a second camera or app connectivity is worth it for how you actually drive.