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REVIEW: BenQ XL2420T 120Hz Part 6


The monitor’s "Standard" image mode can, however, be improved considerably through a small number of changes – even without an external measuring device. After changing the colour temperature to "User" instead of "Normal", selecting a gamma value of 1 and reducing the luminance to a large extent, we measured the following results:

These small changes allowed almost all values to be improved. The gamma value is almost consistently at the ideal level and the grey values are also convincing. The colour values have also improved, but still demonstrate large deviations. Thus, if the monitor is to be used for image editing, a calibration should still be carried out.

The detailed test results can be downloaded as a PDF file.

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Comparison of calibrated monitor with sRGB working colour space

Calibration and profiling allow the highest possible level of neutrality and linearity to be achieved. Colour fidelity (within the scope of the monitor’s limits) is only achieved in conjunction with colour management software.

Colour reproduction after calibration.

After calibration, the monitor is also suitable for image editing in the amateur sector. Almost all values are close to the desired results; only the colour deviations are still somewhat negative, which is due to the sRGB colour space coverage of just 88 percent.

The detailed test results can be downloaded as a PDF file.

Interpolation

The monitor offers considerably more settings in this area than any other model we know of. As well as the more common adjustment options (Full Screen, Justified and 1:1), six formats that are usual in smaller monitors can also be selected.

This should be useful for gamers who want to prepare for a tournament with pre-set monitors and do not have monitors with the corresponding formats. The following formats can be selected: 17 inch (4:3), 19 inch (4:3), 19 inch B (16:10), 21.5 inch (16:9), 22 inch B (16:10) and 23 inch B (16:9), each of which is displayed in the centre of the screen, with black bands at the sides.

Test image, left: native; right: 1,280 x 720 full screen.

Test reproduction, left: native; right: 1,280 x 720 full screen.

The monitor not only impresses with its large number of adjustment options, but also with a very good interpolation performance. The sharpness regulator can also be used when the monitor is connected via digital input, but we did not need it in any of the settings we tested.

As we have already mentioned, the pure interpolation performance was very good, but we can only award the overall performance a rating of good, since the options 1:1 and Justified were not available at every resolution and in addition, distorted display arose at some resolutions.

The large number of different screen sizes that can be selected was unfortunately also only partially convincing. A resolution of 1,680 x 1,050 tested was, for example, interpolated very well, but if we selected the mode that should actually have matched this resolution - 22 inch B (16:10) -, the image became very blurred. Unfortunately, this effect was noticed in the majority of adjustment options tested, so these pre-defined formats cannot be considered a real advantage.

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