Comparison 70mai Dash Cam 1S vs DDPai Mini

The sensor is a key element of any digital camera; it is from it and from signal processing technologies that the quality of the resulting image primarily depends. In this case, the type refers rather to the brand or brand of the matrix; it is usually indicated if the recorder is equipped with a high-quality sensor that is noticeably superior to most solutions on the market.

One of the most popular such options is Sony. The specific characteristics of the matrices ( IMX179, IMX222, IMX291, IMX307, IMX317, IMX322, IMX323, IMX326, IMX335, IMX415) may vary, but anyway, such a sensor is a sign of a high-end DVR.

In addition, there are models equipped with matrices from other manufacturers — Aptina, OmniVision, Samsung(GalaxyCore), Sandvik. Such solutions are generally considered to be simpler and more democratic than Sony — both in terms of price and functionality. Nevertheless, Samsung has a lot of developments in the field of electronics, and even such r...elatively “simple” sensors are usually more advanced and of higher quality than “know-names”.

Another manufacturer that produces fairly high-quality matrices is Panasonic. Such sensors are not as widespread as those described above, but they are still found in video recorders, including pretty advanced.

Model of the processor used in the dashcam

The term "video chip" is used mainly for devices with classic capabilities, "processor" — for advanced models with an abundance of non-standard functions. However, anyway, we are talking about the same component — the main computing unit, the characteristics of which directly affect the capabilities of the recorder as a whole. Knowing the model of the processor, you can find detailed data on it and evaluate how satisfied you are with a device based on such electronics. Of the most advanced modern chips, one can name, in particular, Ambarella A7L, Ambarella A12, Novatek NTK96655, Novatek NTK96660 and HiSilicon Hi3516.

The aperture ratio of the lens installed in the video recorder.

This parameter determines how much the optics weaken the transmitted light flux. The aperture ratio is indicated by a fraction - for example, f/1.8. The smaller the number in the denominator, the more light the lens can transmit. A conventional model with an f/2.2 lens will theoretically produce a darker image than a recorder with a high-aperture optics of f/1.5.

High aperture ratio is important, first of all, when shooting in low ambient light conditions: it allows you to capture images in the twilight and dark hours of the day without creating additional artifacts in the form of noise. At the same time, when shooting with high-aperture optics, the blurring effect of moving objects in the frame is reduced. On the other hand, the actual quality of the recorder camera depends on many other factors - in particular, the type of matrix, the image processor used, etc. Therefore, the aperture ratio specified in the characteristics is not the ultimate truth - it is rather for reference.

The maximum resolution and frame rate of video recorded by the recorder in the HD (720p) standard.

The classic resolution for this standard is 1280x720, but there are other options in DVRs — in particular, 1280x960 (4:3 aspect ratio). Anyway, HD is not outstanding, but quite a decent indicator that allows you to get a video with good detail (for example, it is usually quite possible to make out numbers on cars in close proximity to a car on it).

As for the frame rate, the higher it is, the smoother and less blurry the video will be, the better the details on moving objects will be visible, and also the more space the footage will take up. It is worth noting here that in some inexpensive models, shooting in HD at very low speeds — 15 – 20 fps is used to reduce the cost. Such a shooting speed allows you to watch video more or less normally, but for a normal display of moving objects, a higher frame rate is still desirable — at least 25 frames / sec. It is also worth saying that, in general, for a comfortable perception by a person, a speed of 24 to 60 frames per second is considered quite sufficient, however, among the registrars there are models that can shoot HD at 120 fps. The meaning of this speed is to ensure that individual details on moving objects are as clearly visible as possible in slow motion or frame-by-frame viewing.

The viewing angle provided by the main camera of the dashcam. It is usually indicated along the diagonal of the frame, less frequently along the horizontal, which is why models with the same numbers in the specifications may differ somewhat in actual field of view. So, if you have any doubts about this, it wouldn't hurt to find and watch video samples from different models when selecting one.

All else being equal, a wider viewing angle allows you to cover more area, but individual details in the frame appear smaller. Furthermore, wide-angle lenses cause geometric distortions in the image (however, a DEWARP function may be provided to correct this, see "Features"). As for specific numbers, viewing angles up to 120° inclusive are considered relatively small for modern recorders, values of 121 – 140° can be called medium, 141 – 160° are above average, and the most wide-angle models are capable of covering an area of more than 160°.

— Radar detector. A sensor that reacts to the emission of a police radar and warns the driver that the speed may be recorded by the device. Dash cams with this function are classified into a separate category — combo devices (see "Type"). Let's recall that radar detectors are also available as separate devices, however, a combo device takes up less space when installed. On the other hand, the "anti-radar" functionality in combined dash cams is generally somewhat less extensive than in standalone radar detectors. And combo devices are quite expensive (although often cheaper than a pair of a separate dash cam and a radar detector with similar capabilities). It should be emphasized that having this function does not relieve the obligation to adhere to the speed limits prescribed by traffic rules.

— Signature detection. A function of the radar detector described above that improves recognition accuracy and reduces the likelihood of false alarms. To achieve this, samples (signatures) of the emissions of the most popular radar models are stored in the device's memory, and when a signal is detected, the device compares it with the data in memory. In this way, you can quite accurately determine whether the received signal is radar emission (and which one) or merely an outside interference. The drawbacks of detectors with signature recognition include relatively high cost, slightly increased triggering time,...and inability to "recognize" radars not stored in memory (however, some models allow signature database updates).

— Parking mode. A special mode that allows recording extraordinary events on video while the vehicle is parked; it uses a G-sensor for operation (see "Shooting functions"). In parking mode, the dash cam is in "sleep" mode, and if the G-sensor detects an impact, full recording is activated. Videos from the buffer are "attached" to the start of the recording, allowing not only the moment of the incident to be recorded but also a few seconds before it.

— Motion sensor. A dash cam function based on detecting movement in the camera lens. Thus, if the dash cam "understands" that there is movement in the frame, automatic recording takes place. This allows the dash cam to be set to automatically turn on when movement starts, as well as to record possible incidents, thefts, car hijackings in parking areas that come into the device's field of view.

— Voice control. The ability to control the dash cam through voice commands. The specific list of such commands (and supported languages) can vary depending on the model. However, in any case, this function contributes to driving safety: it allows you to keep your hands on the wheel and not get distracted from the road while controlling the dash cam.

— Gesture control. The ability to control the device using gestures. Note that the capabilities of such control in dash cams are significantly limited: typically, a sensor is used that responds to hand movement in front of the device and is capable of performing only one specific action. Nevertheless, even this possibility provides additional convenience and safety (compared to pressing buttons and especially navigating menus): a hand movement takes fractions of a second, and the driver is hardly distracted from the road. As for specific functions implemented through gesture control, they may include protecting the recorded clip from being overwritten, saving a snapshot, turning off the radar detector sound (see above), etc. In some models, such a function is rigidly set in the settings and cannot be reconfigured, while in others, you can choose from several options.

— Wi-Fi module. The Wi-Fi technology is mainly known as a method of wireless Internet access, but it can also be used for direct connection with another device. The ways of using this technology in dash cams can vary, depending on the functionality. For instance, some models can update map markers for a GPS navigator and GPS informer database through such a connection (see above); others allow uploading recorded videos directly to the Internet (for example, to YouTube); and the most advanced devices with this feature have touch screens and can even be used as full-fledged tablets when removed from the mount, with the ability to browse web pages and install various applications. There are also quite specific features — for example, streaming recorded or captured video to a smartphone or tablet, sharing mobile Internet with other devices (if a 3G/4G module is available), and so on. It is worth noting that the number of public Wi-Fi access points is constantly increasing, they are available at most major gas stations, and are often provided in certain areas of large cities (parks, historical and business districts, etc.). Therefore, accessing the World Wide Web from a dash cam without removing it from the car can be much easier than it seems at first glance.

— 3G/4G modem. A 3G or 4G mobile communication module. Primarily intended for data transmission — in simpler terms, for mobile Internet use; voice calls for dash cams are considered redundant and, as a rule, are not supported. The speed of connection in modern mobile networks is often comparable to that through Wi-Fi; thus, the applications of 3G/4G connectivity can be quite diverse, depending on the specific model. However, three functions are most frequently encountered: downloading information about traffic jams and other relevant data (updates for GPS informers, weather forecasts, etc.); functioning as a GPS tracker (if this feature is available — see above); and as a Wi-Fi hotspot, sharing mobile Internet with other devices (with a built-in Wi-Fi module, of course). Comparing 3G/4G and Wi-Fi, mobile communication is available almost everywhere; however, it comes with costs.

— Bluetooth. Having a built-in Bluetooth module in the dash cam. This technology is used for direct wireless connections with other devices; its application can vary, depending on the functionality of a particular dash cam. One of the most popular applications is streaming audio to a Bluetooth-compatible car stereo or the driver's headset: this can include various notifications from the navigator, radar detector, etc., signals from the "Anti-Sleep" system (see above), and in some models — even music from the built-in player. Another popular use form is file exchange with a smartphone, laptop, or other similar device (primarily for copying recorded materials). Besides this, other more specific usage modes for Bluetooth might be envisioned. It is worth noting that most dash cams with this function operate on Android (see the corresponding point), so the range of options is quite extensive — essentially limited by the range of compatible apps.

— Speaker. A built-in speaker installed in the dash cam housing. This speaker can be used to play, for example, audio during recorded video playback, voice prompts from the GPS navigator/informer, radar detector signals (see above), etc. However, keep in mind that the speaker’s volume might be relatively low, and listening via the speaker in a noisy environment might be challenging.

The largest size of the memory card allowed for the device. This limitation is primarily due to the fact that more powerful hardware is required to work with larger volumes. In addition, there are nuances associated with individual subspecies of cards. Anyway, this value cannot be exceeded: with a high probability, the registrar will either work incorrectly, or will not be able to work at all, or even completely fail.

Most modern registrars support cards up to 32 GB or 64 GB, but there are models that are compatible with more capacious cards — 128 GB or even 256 GB.

Remote control included in delivery. Most often, this is a wireless remote control that operates either in the IR range or via a radio channel; the second option allows you to create remotes with the ability to mount on the steering wheel, right at the user's hand. Anyway, this function provides additional convenience in management: using the remote control is usually easier than reaching for the recorder itself (especially since a careless touch can move the device from its place and shift the camera's field of view).

The capacity of the device's own battery (see "Power source").

The general purpose of the battery depends primarily on this indicator. If the recorder uses a relatively modest battery, up to 500 mAh, this most often means that it plays the role of a backup power supply in case of disconnection from the cigarette lighter (for example, in an accident when the on-board mains fails). In such cases, you can not pay special attention to the capacity - it is usually guaranteed to last at least a few minutes of autonomous recording, and for continuous operation, the device will still have to be connected to the cigarette lighter. But for full (not "spare") power, much more capacious batteries are required - at least 800 mAh, and ideally 1000 mAh and higher. The exception is ultra-compact motorcycle models that do not have screens and do not consume much energy - for them, 200 mAh or even less is sometimes enough.

It should be noted that, theoretically, a more capacious battery allows the device to work longer without recharging. However, in practice, comparing different models by this indicator essentially makes no sense: after all, the autonomy of the recorder also depends on its energy consumption, and it is determined by a number of characteristics. Moreover, manufacturers sometimes select batteries of different capacities for different models precisely with the calculation to achieve more or less the same operating time on a charge.