How to Use the Viewing Angle Test
- Launch the test above and cycle to a solid colour block — red, green, blue, or grey. Press F for fullscreen.
- Sit directly in front at your normal viewing distance. Note the colour and brightness — this is your on-axis reference.
- Move your head left and right to the outer edges of the screen. Observe any colour shift, brightness change, or contrast loss.
- Move your head up and down. Vertical angle shifts reveal the most severe colour inversion on TN panels and significant contrast loss on VA panels.
The test is most revealing on high-saturation colours (red, green) and on 50% grey, where colour shifts are easiest to detect. Pure white and black are less informative for viewing angle evaluation.
Viewing Angle by Panel Type
Panel technology is the single most important determinant of viewing angle performance:
TN (Twisted Nematic) panels are rated 170°/160° by manufacturers, but the practical story is very different. TN panels exhibit severe colour inversion on the vertical axis — moving your head even slightly above the centreline causes reds to shift toward yellow, and dark tones to invert. TN panels are unsuitable for shared viewing or portrait orientation. Their main advantage is fast response time, not wide viewing angles.
IPS (In-Plane Switching) panels offer 178° viewing angles with near-zero colour shift across most of the angular range. The primary off-axis characteristic of IPS is IPS glow — a silvery shimmer in the corners that becomes more prominent when viewed at an angle and from closer distances. Colour accuracy is maintained well even at significant off-axis angles, making IPS the standard choice for colour work and shared viewing.
VA (Vertical Alignment) panels are rated 178° but show visible contrast loss at moderate off-axis angles. Colours wash out faster than IPS as you move to the sides, and contrast — VA's primary strength — degrades noticeably when viewed from angles beyond 20–30° from centre. VA is at its best when viewed straight-on.
OLED panels deliver the best viewing angles of any current display technology. Self-emissive pixels do not suffer from backlight scattering or liquid crystal alignment issues. Colour accuracy, contrast, and brightness remain consistent at almost any viewing angle.
When Viewing Angle Matters Most
Multiple viewers: If more than one person is watching the same screen simultaneously — watching films, reviewing work, showing content to a colleague — IPS or OLED is the correct panel choice. A TN panel from a side seat produces a completely different image to the primary viewer.
Multi-monitor setups: Monitors arranged at angles to the primary viewing position (side monitors in a triple-monitor setup) need wide viewing angles. A TN or narrow VA panel used as a side monitor will show washed-out or colour-shifted content from the primary seated position.
Portrait mode: A monitor rotated 90° to portrait orientation shifts the viewing axis. For TN panels, this moves the severe colour inversion problem to the horizontal axis — the left and right of the screen in portrait mode. IPS handles portrait rotation without significant degradation.
Large screen sizes: On larger panels (32"+), the edges of the screen are already at a significant angle from the seated viewer. The corner-to-corner viewing angle on a 32" display can exceed 30° from centre — enough to produce visible contrast loss on VA and colour inversion on TN.
Frequently Asked Questions
What is viewing angle on a monitor?
Viewing angle describes how much the displayed image changes as you move away from the direct centre of the screen. A wide viewing angle means the image looks consistent from the side; a narrow viewing angle means colours shift and contrast drops off quickly as you move off-centre.
IPS vs VA — which has better viewing angles?
IPS has better practical viewing angle performance. IPS maintains colour accuracy across a very wide angular range with only IPS glow as a characteristic artifact. VA shows visible contrast loss and colour washing at moderate off-axis angles, despite similar rated specifications. For shared viewing or side-by-side content review, IPS is the superior choice.
Why does my monitor look different from the side?
All LCD panels show some colour or brightness shift when viewed at an angle due to how liquid crystals interact with polarised light. TN panels show the most severe shift; IPS panels show the least among LCD types. If the shift is very pronounced even at slight angles, TN is the likely panel type.
What panel type is best for wide viewing angles?
OLED first, then IPS. OLED maintains consistent colour, contrast, and brightness from nearly any viewing angle. IPS maintains good colour accuracy across wide angles with only IPS glow as a trade-off. VA and TN are both inferior for viewing angle performance, though VA is significantly better than TN.