By default, the monitor has 100% brightness and 75% contrast. A 100nit white is achieved by reducing these settings to 40% and 45%, respectively. When the contrast value is higher than 82%, the monitor loses details in lights. When the contrast setting is too low, some of dark halftones are lost.
The brightness is regulated by means of backlight modulation at a frequency of 226Hz.
The L226WTQ has a normal color gamut for a modern LCD monitor: larger than sRGB in greens and smaller in reds.
Color gradients are reproduced correctly at the default settings but become striped at a reduced contrast.
The gamma curves look good at the default settings but the gamma value is rather too high. That’s why they bottom out in the middle and the resulting image has too high contrast and is darker than it should be. This can be corrected by stepping the gamma setting up in the onscreen menu.
As I wrote above, the monitor features f-Engine technology that offers three presets of brightness, contrast and color reproduction. One preset is defined by the user and the others are configured at the factory. Unfortunately, f-Engine doesn’t always have a positive effect on image quality. The increase of color saturation and contrast can distort the reproduction of colors greatly.
These are the gamma curves you get in the Movie mode: light red tones are lost completely and some of light blue tones are lost, too. So, if you want to have a more or less authentic reproduction of colors, you should use f-Engine modes with caution.
The temperature of white corresponds to the name of the appropriate menu item, but the temperature of grays is much higher. The image looks too cold overall and different tones of gray have different hues.
The response time is the parameter the L226WTQ can surprise you with. The response average is 2.2 milliseconds GtG with a maximum of 7.3 milliseconds. Compare this with monitors that lack response time compensation: notwithstanding the small difference in the specified speeds, the real difference is eightfold!
Everything comes at a price and the excellent response time is accompanied with a very high level of RTC errors: 25.7% on average with a maximum of 89.7%! This sounds like a record to me. RTC-related artifacts are visible on this monitor not only in specific game scenes, like with monitors that have an RTC error average of 10-12%, but even in Windows when you’re dragging a window or even moving your mouse pointer:
The photograph shows the pointer moving leftwards on a gray background. It is leaving a sharp white trail that disappears after two frames only.
The monitor’s contrast ratio is very good at 400:1.
The LG Flatron L226WTQ differs from its predecessor L226WT in one point only. It has an LCD panel with Response Time Compensation. It is indeed a very fast monitor but this speed is accompanied with visual artifacts that are perfectly noticeable in games as well as at everyday work. The L226WTQ is so far the worst monitor from this aspect. We’ve never had a monitor with an RTC error average of higher than 25%. The color temperature setup hasn’t improved since the previous model: gray is still bluish in comparison with white.
Note: Users have reported that the RTC mechanism is set up better in later revisions of the monitor’s firmware (in version 1.14 and later) but you can’t find out the monitor’s firmware version without entering its service menu.