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  1. #11

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    Quote Originally Posted by SurrealOne View Post
    Pretty much all of the manufacturers of dashcams that use micro SDHC cards advise that the cards be reformatted once per month. Some cameras (like the FineVu) can actually do the reformat for you (manually activated, not scheduled); most can't. As such cards to have a finite number of writes per cell, this makes sense -- so plan for it if you go the route of a dashcam.

    As for buying a new one, I'd recommend you wait a little bit since you already have two. The latest implementations entail WiFi on the dash cams, making them convenient to config, copy from, and review from a smartphone ... without the dashcam having a monitor (which is important as this reduces the dashcam size). Currently the few that have WiFi are reported to have GPS interference issues, but allow this technology to mature and I think it's the way all dashcams will eventually go.

    You and I tend to have similar tastes so I'll give you a heads-up, too. If you begin looking at dashcams the IONE-3800FU looks great on paper and in videos... at a solid price point for what you get. However, it's only been on the market about 7 weeks and has reliability issues. One of my co-workers in Kansas has one ... and has extreme buyer's remorse about it. Maybe the second generation of that unit will be better...

    One of my biggest gripes about these dedicated dash cams and the IP/ Wifi home surveillance camera's (GoPro included) which is odd, is that their firmware/ Operating System's don't support "exFAT" which allows them to support Micro SDXCHC cards from 64gb - 2TB).

    And their "low light and "refresh rate" capabilities. For a moving vehicle, you would want at least a 240hz refresh rate for motion.

  2. #12

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    Quote Originally Posted by PantheraUncia View Post
    One of my biggest gripes about these dedicated dash cams and the IP/ Wifi home surveillance camera's (GoPro included) which is odd, is that their firmware/ Operating System's don't support "exFAT" which allows them to support Micro SDXCHC cards from 64gb - 2TB).

    And their "low light and "refresh rate" capabilities. For a moving vehicle, you would want at least a 240hz refresh rate for motion.
    I suspect we'll see larger micro SDXCHC support in the next year. Low light and refresh rate improvements will probably be incremental, since what's there is absolutely adequate from a security surveillance point of view (and far better than many existing security CCTV systems).

  3. #13

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    Quote Originally Posted by SurrealOne View Post
    Low light and refresh rate improvements will probably be incremental, since what's there is absolutely adequate from a security surveillance point of view (and far better than many existing security CCTV systems).
    Recording frame rates probably won't get any higher than 60 FPS. Unless you're trying to record mosquitos hitting the windshield, it's also not that useful. Even multi-million dollar ultra high def movies recorded in 4K with $50,000 cameras are only recording at like 40-48 FPS max, and then get downsampled to 24-30 FPS for theaters/dvd/bluray/whatever.

    There isn't really any market for recording bullet time in dash cams, so anything that does record that fast will be extremely rare, and quite expensive, if it ever does come out.

  4. #14

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    Quote Originally Posted by dobey View Post
    Recording frame rates probably won't get any higher than 60 FPS. Unless you're trying to record mosquitos hitting the windshield, it's also not that useful. Even multi-million dollar ultra high def movies recorded in 4K with $50,000 cameras are only recording at like 40-48 FPS max, and then get downsampled to 24-30 FPS for theaters/dvd/bluray/whatever.

    There isn't really any market for recording bullet time in dash cams, so anything that does record that fast will be extremely rare, and quite expensive, if it ever does come out.
    I agree that we probably won't see higher FRAME rates than 60fps -- and that it'd be largely wasted if we did. However, do note that I didn't mention the frame rate.

    PantherUncia mentioned the refresh rate, not the frame rate ... as did I. I believe PantherUncia was referring to the screen refresh rate on those cameras that have screens/monitors. I base this on the 240hz commentary he made.

    There's also the sensor refresh rate ... which is the sampling rate of the sudden motion sensor.

  5. #15

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    Quote Originally Posted by SurrealOne View Post
    I agree that we probably won't see higher FRAME rates than 60fps -- and that it'd be largely wasted if we did. However, do note that I didn't mention the frame rate.

    PantherUncia mentioned the refresh rate, not the frame rate ... as did I. I believe PantherUncia was referring to the screen refresh rate on those cameras that have screens/monitors. I base this on the 240hz commentary he made.

    There's also the sensor refresh rate ... which is the sampling rate of the sudden motion sensor.
    It wasn't clear what exactly he meant by refresh rate, and a search for "refresh rate" relating to dash cams was all about the recording of frames, from what I saw in the search results. But I doubt you'll see higher than 60 Hz refresh rates in the LCD panels for those that have them, either. The 120/240 Hz refresh rate nonsense that gets marketed on LCD TVs is just that, nonsense. It's some software processing to smooth the picture, and make some educated guesses about where things on the screen will be in the next several frames, and fakes it, displaying something that isn't quite there yet, where it will likely be. This is why it makes scrolling text look a bit better, but heavy action sequences in movies and such, can look quite horrible with it. The LCD panel side you actually see the light come from is still actually only refreshing at ~60 Hz.

    Were you also talking about this, or the sensor refresh rate?

  6. #16

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    Quote Originally Posted by dobey View Post
    Were you also talking about this, or the sensor refresh rate?
    I left it generic so that it would apply to both.

    I don't like dash cams with displays -- because to me it makes no sense to have the added bulk (which draws attention to the cam) to see an image of something you can look right out the window and see, yourself. As long as you can stream data off the cam or simply pop a chip out to snag the video, I'm happy. Thus, the only refresh rate that I personally care about is the sensor refresh rate.

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