Comparison Phantom CAM-101UN vs Phantom CA-2301UN

Regular method and installation location provided by the camera design.

— Universal. This method of installation can be called "outdoor" — the camera is placed on a stand screwed to a particular surface, and the body is completely outside. This option is generally universal and can be used regardless of the brand of car, although there are standard cameras (see below) with such an installation.

— Mortise. Cameras installed in specially made sockets for them. Usually they have a round shape, and for installation it is enough to drill a hole of the appropriate diameter in the body of the car. Also, usually, they are universal.

— Screw. Cameras designed for screw mounting (hence the name). They are quite simple and easy to install — it is enough to make a hole for a screw in the case, and the required hole diameter is noticeably smaller than for mortise models. Most often they are universal.

— License plate frame. Devices that are license plate frames with built-in reversing cameras. They are convenient in that they do not require special installation work — the structure is simply placed instead of the standard frame, on the same mounts. At the same time, note that frames for numbers can have a different format and, accordingly, the size and configuration of fasteners; this point must...be clarified before buying.

— In the license plate cover. Cameras mounted in the license plate light. Often they have in their design not only a camera, but also a lamp for illuminating the numbers. License plate shades on different cars have a different design, respectively, models of this type are made mostly standard (see below).

— In the boot handle. Models that are a boot handle with a camera installed in it and mounted instead of a complete handle. They are made only regular (see below).

— The emblem. Models of this type can represent both separate cameras built into the "shield" and emblems supplemented with cameras and installed instead of the factory emblem. By definition, they are only regular (see below).

— In the grille. In the vast majority of cars, the engine, and, accordingly, the radiator is located in front; accordingly, this option is typical for front-view cameras (see "Type of view"). Most of these models are standard (see below).

— At the stoplight. Optics is made in the form of a brake light. Usually, such cameras are made for a specific make and model of a car. The device itself is installed in place of one of the regular brake lights (right, left or centre). At the same time, during the installation process, it is not necessary to make holes in the body elements or turn off the license plate light. The camera in the brake light housing does not violate the integrity of the design of the stern, concisely blending into the image of the exterior.

The physical size of the photosensitive element of a camera. It is usually measured diagonally and is indicated in inches — more precisely, fractional parts of an inch. The larger the sensor, the larger the size of each individual dot (pixel) on it, the more light enters each pixel, and the easier it is to ensure high image quality with a minimum of noise (especially when it comes to shooting at dusk). However you need to remember that only matrices of the same type and resolution can be compared with each other in size. And a large sensor is not always a guarantee of quality — a lot depends on the rest of the hardware of the camera, the quality of its installation and other factors. However, the large size of the sensor usually indicates a high class camera.

The resolution of the frame taken by the camera in video mode, in pixels — in other words, the size of the picture in dots horizontally (first digit) and vertically (second digit). It should be taken into account here that in the case of reversing cameras, the recording in pixels describes only the frame on the camera matrix itself; to describe the "picture" coming to the connected screen, the designation in television lines (TVL) is used. This is due to the fact that the video signal is transmitted in an analogue format; See Video Resolution below for more on all of this. Here we note that with the same resolution in TVL and the same viewing angles, a camera with a higher resolution in pixels will produce a clearer, more detailed image. But HD reversing cameras, and even more so Full HD units.

This parameter describes the total amount of interference in the video output from the camera. The higher the signal-to-noise ratio (that is, the ratio of the useful signal level to the level of extraneous interference) — the better the image will be, the less distortion it will have. The minimum level for modern cameras is considered to be 40 dB — with it, the “picture” is reproduced with minor noise that does not significantly affect its perception. And in the most advanced models, this figure can reach 48 – 50 dB — such an image for the human eye is almost indistinguishable from the perfect one.

Of course, in fact, the quality of the image also depends on the capabilities of the screen on which it is displayed, however, even the best screen will not save a “noisy” camera.

The lowest ambient light level at which the camera can provide a normal image without additional illumination. In modern models, this indicator varies on average from 0.01 lux (clear night at a quarter moon) to 3 lux (deep twilight).

The lower the minimum illumination, the better the device handles with low light. However, note that in the absolute majority of cases, car cameras at night are used together with car lighting devices: front ones (see "View type") — with main headlights, rear ones — with reversing lights. Therefore, this parameter is rather general reference or even advertising information, rather than a really significant characteristic.