Comparison Eken H9R vs Sigma mobile X-Sport C19

Camera ability for recording WVGA (480p) video.

The most popular resolution options provided by this standard are 640x480 and 848x480; there may be other options, for example, 736x480 or 720x576, but the resolution of such a video is very low by modern standards.

Another important parameter indicated in the specs of the video is the frame rate. The higher it is, the smoother the picture looks, and the less moving objects are blurred in the frame. Accordingly, the higher the frame rate, the better the dynamic scenes will look on the video. A value of 120 fps or more usually indicates that the camera can shoot video in slow-motion format (although it should be specified separately). At the same time, many models with high fps allow you to set a lower frame rate than stated in the specifications — for example, a camera for 120 fps can also support 30 and 60 fps. This feature is useful in cases where you need to save memory — the higher the frame rate, the more space the video takes (at the same resolution), and by reducing the number of frames per second, you can fit more material in the same amount of memory.

The ability of the camera to shoot QuadHD video.

This standard includes an extensive set of resolutions — from 1440 to 3456 pixels horizontally and from 1440 to 2160 pixels vertically, with almost two dozen intermediate options. It is a rather specific transitional option between the relatively inexpensive FullHD 1080p and the demanding UltraHD 4K, allowing you to shoot higher resolution video than 1080p without significantly increasing the cost of equipment. Note that pure QuadHD resolutions are rare in TVs and monitors, but modern technologies make it possible to comfortably watch videos of this format on any high-resolution screen.

Another important parameter given in this paragraph is the frame rate. The higher it is, the smoother the movement in the frame will be, and the details in dynamic scenes will be visible clearly. For example, a filming speed of 25 fps or 30 fps approximates the standard frame rate in film and television; such an image is quite viewable, but fast-moving objects in the frame will look blurry. With an increase in speed to 60 fps, this effect becomes almost imperceptible. The highest QuadHD frame rate found in modern action cameras is 120 fps; this frequency is used when shooting slow-motion video (as well as models with a frequency of 100 fps) because at a n...ormal playback speed, 60 fps is enough.

The ability of the camera to shoot Ultra HD 4K video.

This format covers several resolutions in which the horizontal frame size is approximately 4K pixels. The most popular in action cameras is 3840x2160 (twice the FullHD frame on each side), but there are other options — for example, 3840x1920, corresponding to an aspect ratio of 2:1. In general, 4K is a kind of successor to Full HD: among HD standards that surpass Full HD, UltraHD is the most popular, in particular, many advanced TVs are produced with 3840x2160 screens. On the other hand, this format is quite demanding in terms of processing power and memory, so it is relatively rare in action cameras, mainly among premium models.

Another important parameter given in this paragraph is the frame rate. The higher it is, the smoother the movement in the frame will be, and the details in dynamic scenes will be visible clearly. However, in UltraHD mode, most modern action cameras produce a very low frame rate — most often 30 fps, and in some models 24 fps or even 15 fps. This video is quite viewable, but fast movement in the frame may look blurry. There are cameras capable of shooting UltraHD at a solid speed of 60 fps — the blurring effect during such shooting is almost imperceptible. However, such a model cost is high.

Frame rate supported by the camera when shooting in slow motion.

In general, such shooting is called “high-speed” because it is carried out at an increased frame rate (more than 60 fps). As a result, when played back at normal speed (60 fps and below), the video looks slow hence the name. This kind of slow-motion can be used just for fun, as an artistic technique, and even for scientific purposes — to capture movement that is too fast for the human eye. In any case, the higher the slow-mo frame rate, the more you can slow down the video and the more advanced the camera is in this regard. On the other hand, the higher the frame rate, the more performant the graphics part should be; and this, in turn, affects the price of the device, sometimes quite noticeably.

We also note that slow-mo shooting may be available only at certain resolutions, not always at maximum. These points can be directly specified in the specs of the action camera.

The presence of a digital (electronic) stabilization system in the camera design.

Any stabilization is intended to compensate for small juddering of the image that occurs due to the instability of the hold in the hands, vibrations from the motor or road roughness (when used in transport), etc. Digital stabilization is carried out as follows: a reserve area is allocated along the edges of the sensor, which under normal conditions does not participate in the formation of the final image. If the device is being shaken, the camera electronics select certain parts of the image from the reserve and build the image in such a way that in the end, it remains stable.

Compared to other methods of stabilization, digital systems are extremely simple and reliable. Moreover, they are inexpensive and have almost no effect on the weight, dimensions, and price of the camera. At the same time, with this method of stabilization, the effective area of the image sensor is reduced, which can adversely affect the image quality and the amount of noise on it.

The maximum resolution at which the action camera can take photos. Specified in pixels horizontally and vertically.

This parameter is directly related to the resolution of the image sensor(see above): the total number of pixels in the photo, usually, corresponds to the number of pixels in the sensor. For example, a photo resolution of 4608x3456 corresponds to a sensor of 15925248 pixels, or approximately 16 megapixels. If the number of pixels in the photo is greater than the claimed resolution of the sensor, then the manufacturer uses software tricks that allow you to improve the photo resolution to a higher one than originally. This reduces the cost of devices but also affects the quality of images.

Theoretically, high-resolution images can provide good detail, but in fact, much depends on the specs of the sensor (primarily physical size) and image processing features.

— Diagonal. The larger the screen, the more convenient it is to watch (and also to control if the display is touch-sensitive). On the other hand, the diagonal of the built-in display directly affects the size of the case, and action cameras should be quite compact. Thus, there are practically no screens larger than 2.5" in modern action cameras.

— Resolution. Theoretically, the higher the resolution, the clearer and better image the screen produces. On the other hand, displays in action cameras are designed mainly for menu operation and footage preview — and for these purposes, especially high resolutions are not needed. For models with two screens, the rear display is considered the main display.

— Touch screen. Display equipped with a sensor and responsive to touch like in smartphones/tablets. Control through such a display is simpler and more intuitive than using buttons, rotary knobs, etc. On the other hand, for more or less convenient control, the touch screen must be quite large, which affects the dimensions of the entire camera.

— Front screen. The presence in the camera of a screen mounted on the front panel, next to the lens. Other displays may not be present at all; in such cases, the diagonal, resolution and other parameters are given for the front screen.

It is worth noting that most often the simplest black-and-whit...e displays are installed on the front panel, suitable only for text and basic graphic information. However, even on such a screen, you can display a wide variety of service data: the current mode of operation (photo, video, standby), the resolution used, the shooting time, the amount of free space on the drive, etc. But more advanced displays are not used as front displays: a full-colour screen is needed only for taking a selfie, and for this you can use a remote display with a remote control(see "Control") or a smartphone connected to the camera.

— Protective case. A special container that provides additional protection against dust, moisture, shock, extreme temperatures and other similar “troubles”. The specific degree of protection in each case must be specified separately. In order not to interfere with the shooting, the box is made of transparent materials. In addition, we note that some cameras can only be mounted on mounts in a protective case (or in a mounting frame — see below), since the camera body may not have mounts for this.

— Curved mount(helmet). A mount designed to mount the camera on a helmet or other curved surface. The design of such a mount is based on a curved platform with an adhesive layer or hook-and-loop, the shape of which approximately corresponds to the shape of the surface of the helmet. Such a fixture can provide a more secure hold than the classic flat platform (see below).

— Flat mount. One of the basic and simplest mounts used to fix an action camera on almost any uniform surface: snowboard, skateboard, car hood, etc. It is a small flat platform, on one side of which the camera is attached, while the other is fixed on the desired surface (using hook-and-loop, special glue, etc.). Note that flat mounts are often used for mounting on a helmet. However, there is a separate type of mount for this, with a curved platform (see above).

— 3-axis mount. It differs from other types of mounting in the presence of three movable nodes that allow you to rotate the camera at an angle of up to 90 degrees in three axes. This allows you to choose the most interesting or successful shooting angle — on the side of the helmet, for example. Such options are usually compatible with many other mounts, so they can be used in conjunction with a handlebar, curved mount, etc.

— Bicycle/moto handlebar. Mount for installing the camera on a small pipe, such as the handlebars of a bicycle or motorcycle. Usually, it looks like a clamp, and the size of the fastening can be adjusted within a fairly wide range, adjusting it to pipes of different diameters.

— Suction cup(on glass). Camera mount, fixed in the right place with a suction cup. Allows you to install the device on flat and slightly curved surfaces. At the same time, note that such fasteners are not held as securely as flat or curved ones (see the relevant paragraphs). On the other hand, the suction cup is easy to attach and remove and leaves no marks. Therefore, mounts of this type are mainly used for installation on car glass when the camera works as a DVR.

— Clamp (clip). The clip-pin mount is quite versatile since it allows you to hang the camera on almost any suitable piece of equipment (backpack strap, unloading belt, belt, etc.). But at the same time, it is not very suitable for extreme shooting due to the relatively low reliability.

— Head mount. A device for fixing the camera on the head — usually on the forehead, like a headlamp. In addition to being hands-free, this placement has another advantage: the camera lens faces the same direction as the user. In this case, the mount itself is usually a system of elastic straps and is designed to be worn directly on the head, in contrast to the curved platform for the helmet. However, in some models, the possibility of putting on a helmet is also allowed.

— Chest mount. This mount is a system of elastic straps that allows you to fix the camera on the user's chest, shooting a little lower than the "eyeball". Like the head mount (see above), it easily adapts to the desired size.

— Mounting frame. A device designed to mount the camera on various mounts — helmet-mounted, on the handlebar, etc. The camera body itself often does not have mounts for such fixing, which is why you have to use additional equipment. Note that a similar function is often performed by a protective case(see above); the mounting frame, in contrast, provides almost no protection. However, in the frame, the camera body remains as open as possible. This provides additional features — in particular, it allows you to connect various cables and effectively use the built-in microphone, which is not possible with many protective cases.

— Monopod(selfie stick). It is a rod, usually folding, and sometimes adjustable in length; on one end of the rod is a mount for the camera and on the other — a handle for holding in your hand. By the name, such a monopod is intended mainly for filming itself — thanks to the length of the rod, the camera can be held at a convenient distance for this. However, other applications are also possible: for example, with the help of a monopod, you can “look” quite far over the edge of a cliff or around a corner. The main disadvantage of such a device is that one hand is constantly busy.

In addition to those mentioned above, other types of mounts may be included in the delivery package — for example, for musical instruments (for a guitar neck, a drum kit bar, etc.), for a surfboard, etc.

Action camera control. Specified only if this model is equipped with an optional external control device. So in this case we are talking more about the type of remote control.

The remote control itself is convenient, first of all, because reaching directly to the camera can be inconvenient, and sometimes even dangerous. But the types of devices used for this can be as follows:

— Portable remote control. Traditional external control panels that do not have displays. Theoretically, the functionality of such a remote control can be different, but only the most basic functions are usually available — start/stop recording and taking photos; the rest of the possibilities can be controlled traditionally. Such remotes often have a strap for attaching to a hand or a mount for installing such a strap. The absence of a screen, on the one hand, makes them as simple, reliable and autonomous as possible, on the other hand, it limits the functionality.

— Remote screen with remote control. Remote controls complete with their displays. Like simpler devices, without a display, they are usually designed to be mounted on the hand. Therefore, the built-in screens have a very small diagonal — otherwise, it would be simply inconvenient to wear them. Nevertheless, even such a screen turns out to be quite functional and useful. It usually plays the role of an external viewfinder, allowing you to se...e what exactly the camera is recording at the moment — an important feature, given that the action camera's screen (if any) is most often not visible to the user at the time of shooting. Of course, various service information can also be displayed on the remote display.

It is worth noting that many modern action cameras can use a smartphone connected via Wi-Fi as an external display. However, a specialized remote screen is often more convenient due to its compactness, security and convenient attachment to the arm.