What super capacitor dashcam would you recommend ?
Honestly I'm not familiar with the current offerings. If i were in the market, I'd look for:
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2k sensor to read number plates at longer distances (4k gets very hot and needs bigger micro SD card)
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wide fov to capture vehicles near your A pillars
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lock files: some dashcams detect collisions with onboard sensors, while others have an additional button/voice command to manually lock current file, for eg if there was a close shave
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hardwire kit with low voltage cutoff: to continue recording after an incident if you have to switch off the vehicle and step out. Will give you parking mode as well, without depleting car battery. Else you'll have to leave the key
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CPL filter: depending on the angle of your windshield, it may reflect your dashboard which will hinder the recording. But it should be easy to install/uninstall since it cuts out light and you'll want to remove it in low light conditions
Optional:
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GPS module: more for keeping the correct timestamp in the video, than for location/speed data
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Starvis low light sensor: it certainly captures a much better video at night, but the one i tested had a significantly lower fov than the regular sensor, so decided against it. Besides night time number plate readability is a hit/miss for ALL cameras since it can get overexposed of your headlights fall directly on it, and is under exposed at other times.
Once you've shortlisted based on paper specs, look at actual recordings shared by real people. Even better if you can download the original mp4 recordings instead of watching on YouTube. That's how i figured out Viofo was listing horizontal fov for some cameras and diagonal fov for others.
In the end, having ANY dashcam is better than having NO dashcam, so don't get hung up in selecting the best one - there's just too many out there. Look at user posts in
dashcamtalk forums for real world pros & cons of a specific model