Brightness and contrast settings can be adjusted either directly on the monitor or in the graphics card. It should be noted that both settings can overlap. Experience has shown that adjusting the settings on the monitor offers better stability.

A glossy monitor display shows clearer images than a matte monitor display. On the other hand, all active and passive light sources in the room — including the user's clothing in front of the monitor — are reflected in the glossy surface, causing Lamb to increase. Monitors with glossy surfaces should therefore only be used in rooms with controlled lighting and installed in such a way that the veil luminance Lamb remains below the minimum luminance Lmin.

Monitors with many mini LEDs as backlighting for the TFTs can switch off individual groups of LEDs at low gray values, thereby achieving very low minimum luminance Lmin locally. However, this does not offer any significant advantage for the evaluation of radiographic images on the monitor.

Many graphics cards and monitors that run on the Windows® operating system are supplied with a monitor curve that corresponds to a gamma of 2.2. This curve deviates from the GSDF, especially in the dark range, and must either be switched off or combined with a curve that you generate yourself, so that the desired GSDF monitor characteristic curve according to Barten is achieved overall.

Hi Klaus,

you mention about mini led backlighting:

Zitat von Klaus im Beitrag #1

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However, this does not offer any significant advantage for the evaluation of radiographic images on the monitor.

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Yes, you are right. When we tested a monitor with this Mini-LED groups we have seen something like small clouds in the dark areas. This may have influence on the linearity (GSDF).