mentadent
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- Dash Cam
- VIOFO A229
I can read all the licence plates without issue
Something about these videos just doesn't add up. Although they "appear" to be "dash cam videos", they do not appear to be captured with a dash cam.
A recent model GoPro can get video of that caliber. The stabilization and horizon-levelling of the GoPro Hero 10 is pretty darn cool, no gimbal required. And it can do 5.3k video. The problem is, everybody knows that GoPros aren't intended for, and in fact are not really good at, super-long-term recordings such as a dashcam, and lack some of the features that we'd expect in a decent dashcam (overlays without a bunch of effort, etc).
If GoPro were to decide to get into the dashcam market though, I think there may be some shakeups.
Two 1" sensors covering 180 degrees each is equivalent to 4 1/2" sensors covering 90 degrees each, so a little better than our dashcams in light gathering, but not much...Well not much exiting me in small cameras these days,,,, that is until yesterday when i fell over the new Insta360 One RS 1-inch 360 Edition.
That is two 1" sensors,,,,, thats pretty damn sweet.
I 100% agree.As for shaking up the dash cam industry I'd love to see GoPro or Sony enter into the product category. I imagine a capable camera from either of these companies would be pretty pricey though.
Have you tried using an Apple iPhone camera as a dashcam at night?I 100% agree.
What about Apple too, using the cameras from their cell phones?
I would never buy one, but I think it would accelrate dash cam technology as a whole.
Please forgive my ignorance, as I've only been using dash cams for 2 years now.
But compared to other segments of consumer electronics over the past 40 years, dash cam technology seems to move at a snail's pace.
Is that bad to say? lol
-Chuck
I 100% agree.
What about Apple too, using the cameras from their cell phones?
I would never buy one, but I think it would accelrate dash cam technology as a whole.
Please forgive my ignorance, as I've only been using dash cams for 2 years now.
But compared to other segments of consumer electronics over the past 40 years, dash cam technology seems to move at a snail's pace.
Is that bad to say? lol
-Chuck
A rolling shutter is not the cause of motion blur. A rolling shutter can cause geometric distortion as the object is in different locations for different parts of the frame. Rolling shutter distortion of a license plate could skew the plate, but would not make it unreadable. Motion blur is caused by longer exposures. A long exposure with a global shutter would suffer just as much motion blur as the same exposure with a rolling shutter, the difference is that with a global shutter a square moving object would remain square whereas with a rolling shutter a square moving object would appear as a trapezoid. Both would be equally blurry.
To kill motion blur, you need a short exposure. To get a short exposure, you need a fast sensor. A large aperture gets more light, but reduces the depth of field.
Right on Dashmellow,I don't see Apple entering the dash cam market. They are not really a consumer electronics company in the sense that Sony has been for many decades and dash cams are likely too much of a niche market to interest Apple. Another factor is that although Apple has some excellent cameras in their smartphones, tablets, laptops and desktop computers, they are not a dedicated "camera developer" like GoPro or Sony. Sony in particular has a long history of making everything from professional DSLRs and video cameras, camcorders, action cameras, point and shoot pocket cams and others along with a huge range of other consumer electronics, so I see them as a brand with the resources and expertise to enter the dash cam market with a game changing device. For example, I would love to see Sony adapt their technology from their RXO II action camera into a dash cam. The camera has a 1 inch Exmor-R sensor. STARVIS is a designation for sensors within the Exmor R family. Of course, the RXO II is a seven hundred dollar camera but if done right, a dash cam in that price range might actually be worth the money.
It would be great to eventually see Sony develop their high performance Sony Pregius S sensor technology into a product that could be used in dash cams. While it is a sensor designed for industrial machine vision, a version of it could conceivably be adapted for dash cam use and it is already available in a size and format that could work. Apparently, it is already being used in CCTV surveillance cameras. Aside from all of the appealing features it possesses, the main attractions is that it is a back illuminated sensor that uses a global shutter instead of the typical rolling shutter we are all familiar with. A Global Shutter completely eliminates motion blur! Now a sensor like that THAT in a dash cam would really shake things up, wouldn't it! While the Pregius S sensor itself may not end up in a dash cam, a company like Sony has the wherewithal to produce a global shutter sensor that could make motion blur a relic of the past in dash cams.
As for dash cam technology moving at a snails pace, keep in mind that the entire product category had only been in existence for perhaps 15 years and so. It was basically kick-started by small generic Chinese manufacturers who started using available off the shelf components from the CCTV camera industry and small camcorder industry such as M12 (S mount) lenses, SoC chips and memory cards to create a new class of products. Even today most dash cams are still produced by smaller manufacturers who are dependent for major innovations on the whims of the companies that product the SoC chipsets and sensors that make them tick. A large corporation like Sony or Nikon would have the resources to design and manufacture their own dash cam chipsets and sensors. We see that with the more recently introduced Hikvision dash cams. As a company with a wealth of CCTV camera building expertise they are another example of a large corporation that can enter the dash cam market with products to "shake things up". Unfortunately, to date Hikvision dash cams in North America are only available in Canada but not marketed in the US.
The amount of distortion from a rolling shutter depends on how fast it rolls, rolling shutter distortion used to be much worse than it is with the latest and much faster rolling shutter sensors, it's not much of an issue for dashcams these days. Global shutter sensors are used mainly to monitor things on production lines where you can't use rolling shutter because the image is frozen by use of flash illumination (not possible with dashcams), and a rolling shutter would miss much of the flash and thus miss much of the image - this is how it avoids motion blur, not because it has infinitely fast exposure times making motion blur impossibleA rolling shutter is not the cause of motion blur. A rolling shutter can cause geometric distortion as the object is in different locations for different parts of the frame. Rolling shutter distortion of a license plate could skew the plate, but would not make it unreadable. Motion blur is caused by longer exposures. A long exposure with a global shutter would suffer just as much motion blur as the same exposure with a rolling shutter, the difference is that with a global shutter a square moving object would remain square whereas with a rolling shutter a square moving object would appear as a trapezoid. Both would be equally blurry.
To kill motion blur, you need a short exposure. To get a short exposure, you need a fast sensor. A large aperture gets more light, but reduces the depth of field.
compared to other segments of consumer electronics over the past 40 years, dash cam technology seems to move at a snail's pace.
Global shutter sensors are used mainly to monitor things on production lines where you can't use rolling shutter because the image is frozen by use of flash illumination (not possible with dashcams), and a rolling shutter would miss much of the flash and thus miss much of the image - this is how it avoids motion blur, not because it has infinitely fast exposure times making motion blur impossible