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REVIEW: HP ZR2440w Part 7


Colour reproduction in the factory settings.

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

Comparison of "User defined (RGB)" image mode with sRGB working colour space

We also carried out measurements on the "User defined (RGB)" image mode without making any changes and, as can clearly be seen, the pre-defined values are not just unusable for CEPS. The excessively high contrast, set at 80, gives the display an unnaturally yellow tinge and the gamma plummets, measuring an average of just 1.66. In this image mode, it is urgently necessary to decrease at least the contrast value to 66 or 67. The following calibration result shows just what kind of potential the HP ZR2440w has.

Colour reproduction in the user-defined standard setting.

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

Comparison of the sRGB working colour space with respect to the monitor profile
Calibration and profiling allows the highest possible level of neutrality and linearity to be achieved. Colour fidelity (within the scope of the monitor limits) is only achieved together with colour management software.

After calibration and profiling, the HP ZR2440w reaches its full potential. All results, but also the gradation in particular, increased considerably. The contrast ratio even increases to an impressive 1173:1. Only the deviation in the blue sector remains. This result means that the HP ZR2440w can also be recommended for CEPS, at least in the amateur area.

We achieved this result using the following settings: luminance: 27 %, contrast: 66, Red: 254, Green: 245, Blue: 255.

Colour reproduction in the user-defined standard setting.

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

Interpolation

HP has done a good job upgrading the interpolation options on the ZR2440w. Whilst these were rather sparse on the HP ZR24w, the HP ZR2440w even offers 1:1 display as well as the "Full screen" and "Corresponding aspect ratio" options and when material is played back via external source, the "Display overflow" option also becomes available. The "Corresponding aspect ratio" option is available for all interpolated resolutions on the HP ZR2440w.

Theoretically, it would not be necessary at all to use interpolated display on this monitor, but we still had a look at the interpolation quality of the ZR2440w, especially in combination with the sharpness regulator. This can be changed in steps of 1 between 0 and 5. In the factory settings, the sharpness level is set to 4, which does not leave much scope for increasing it.

In practice, increasing the sharpness to 5 for interpolated display works very well and the display becomes visibly sharper without any noteworthy over-sharpening. Fine over-sharpness shadows can only be seen in some colour combinations. If a user is not happy with this, there is still the option of 1:1 display. The HP ZR2440w demonstrates good interpolation behaviour and with an increase in brightness and the helpful sharpness regulation range, it is even possible to achieve a good result.

Left: native resolution. Right: 1,280 x 720 pixels displayed in justified format, but without any change in sharpness (Sharpness 4).

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