Comparison Huion Kamvas Pro 22 vs Huion Kamvas GT-191

The exact size of the active area of a tablet (or screen in a graphic display) in width and height. In general, it is more of a reference than a practically significant parameter: when choosing a traditional graphics tablet, there is often enough information about the format (see above), and for displays, primarily the diagonal (see above) and aspect ratio (see below) are of practical importance . However, the exact dimensions can also be useful in fact: for example, you can determine the aspect ratio from them (for classic tablets, this parameter is often not indicated).

Diagonal of the working area — the screen itself — in a graphic display (see "Type").

In general, the larger the diagonal, the more convenient the device is to use: a large working area covers a large area for drawing and at the same time allows you to work effectively with small details. On the other hand, this parameter directly affects the price, and the dimensions cannot be discounted: in some cases, there may simply be no room for a large device.

By the standards of graphic displays, 13.3" or less is considered small, 15.6" is considered medium, and many models have larger screens. And it is customary to evaluate the size of traditional tablets by the format, and not by the diagonal.

The number of control keys provided in the design of the tablet.

Each of these keys is responsible for a specific function, while the set of these functions can be configured: in some models they can be selected manually, in others the functionality of the keys changes automatically, depending on the currently active application. Anyway, additional keys allow the user to perform various actions without looking up from the tablet — this can be very convenient in the midst of the work process, when you don’t want to change the pen to the mouse again or reach for the keyboard. And the more control keys — so, respectively, more additional actions can be performed using the tablet. On the other hand, with relatively simple tasks, the abundance of additional buttons can hinder and confuse the user rather than help.

The most modest modern tablets provide up to 5 control keys ; the most popular option is from 6 to 10 keys, and in advanced models this number can reach 15 or even more.

A touch-sensitive surface, usually located along one of the edges of the front panel of the tablet case. The touch strip provides additional controls such as scrolling, zooming, canvas rotation, and other gestures that can be customized to perform different tasks. Thus, the strip can often be reprogrammed for certain actions, be it quickly switching between tools in a graphic editor or changing brush parameters.

The contrast of the screen set in the graphic display (see "Type").

This setting describes the brightness ratio between the brightest white and darkest black that the screen is capable of reproducing. The larger the first number, the higher the contrast and the better the image as a whole. However note that the contrast ratio of modern graphic displays usually ranges from 400:1 to 3000:1 — this is generally noticeably lower than that of computer monitors, especially professional ones. So the final control of the result is still best done on the monitor. On the other hand, if you are going to work professionally with graphics on a tablet display, it makes sense to look for a model with high contrast.

The range of colors that can be displayed on a graphics tablet screen. The parameter is indicated as a percentage relative to the coverage of the NTSC color space. The larger the color gamut, the wider the capabilities of the screen and the better the quality of its color rendition, which is extremely important when working with graphic materials.

NTSC is one of the first color models, launched in 1953 for color television. And it is still used to describe and compare matrices. The NTSC model covers a larger range of colors than the standard sRGB used in computer technology, so even a relatively small number of percentages corresponds to a fairly wide coverage. For example, a value of 72% or more according to NTSC is considered a decent indicator for use in design and graphics.

The range of colors that can be displayed on a graphics tablet screen. The parameter is indicated as a percentage relative to the coverage of the Rec.709 or sRGB color space. The larger the color gamut, the wider the capabilities of the screen and the better the quality of its color rendition, which is extremely important when working with graphic materials.

Rec.709 and sRGB are the most popular modern color models: they have the same range and differ only in the area of application. So, sRGB is used in computers, and Rec. 709 - in HD television. In terms of the range of colors, these spaces are identical and the percentage of coverage for them is the same. In the screens of graphics tablets, the color gamut for the specified models can reach and even exceed 100% - these are the values that are considered necessary for correct work with graphic materials.

The model of the pen that comes with the device. Allows you to understand which one is used and learn more fully its full characteristics. In this case, in the case of a replacement, you will already be aware of which accessory is needed for the purchase. However, nothing prevents you from replacing the existing one with a more advanced one, of course, if the graphics tablet itself allows you to work with a different pen model.

The power supply method used by the supplied pen (stylus) of the tablet.

A lot of modern tablets have pens without a battery, or rather, without any power at all. This is the most convenient option from the user's point of view: there is no wire in the design that gets tangled at hand, while the operating time is not limited by the battery / accumulator charge, and in case of breakage or loss, the pen can be easily replaced. The disadvantages of such models include the lack of any additional functions — for example, quick switching between tools with a button on the stylus. In addition, the lack of electronics in the pen puts forward increased demands on the working sensor on the tablet itself: in particular, it is he who must recognize pressure levels. Therefore, devices with pens of this type are themselves quite expensive.

In turn, with the presence of electronics, a number of sensor functions (in particular, recognition of pressure levels) can be transferred to the stylus, which makes it possible to simplify the design of the working surface and reduce the price of the tablet. Feeding methods for such feathers can be as follows:

— From a tablet. Powered by the cable that connects the pen to the tablet. Such pens are simple, inexpensive, you do not need to buy additional power supplies, and their operating time is not limited. On the other hand, the wire noticeably limits mobility and can get tangled und...er the hands, and the above-mentioned advantages are generally not decisive. Therefore, nowadays, this option is extremely rare.

— From a battery. A replaceable battery or several standard size batteries is the most popular way to power pens today. Such styluses do not have a wire that limits mobility; the time of their work is limited, but in general it usually turns out to be quite large (weeks, or even months); when the charge is exhausted, it is enough to replace the dead battery with a fresh one; and the batteries themselves can be chosen at your discretion. The unequivocal disadvantages of this option include the need for additional costs — you either have to periodically buy fresh batteries, or spend money on batteries with a charger (besides, batteries are not produced in principle in some sizes).

— Accumulator. Powered by the original built-in battery, often non-removable. Such power also allows you to do without a wire, while you do not need to spend extra money on the battery — it is initially supplied with the pen, and when the charge is exhausted, it is enough to recharge the stylus, there is no need to buy a new battery. On the other hand, charging itself takes time (sometimes quite a lot), while a replaceable battery can be quickly replaced. Therefore, batteries are used somewhat less frequently, although they are also quite common.