Color palettes
The color scheme the device uses to show heat, such as white-hot, black-hot or red. It changes how the picture looks, not what the sensor detects.
What it means
A thermal sensor reads temperature, not color. The palette is the set of colors the device paints those temperatures with. Nearly every unit offers several:
- White-hot: warm things bright, cool things dark. The most common choice for scanning.
- Black-hot: the reverse. Some hunters find it easier on the eyes and better for picking out shape.
- Red-hot or highlight modes: the warmest spots shown in red or another color over a gray picture.
- Rainbow or iron-style palettes: many colors across the temperature range. They show small differences but can make shapes harder to read.
What it changes in the field
The palette does not make the sensor see farther. It can make an animal easier to pick out against a busy background, and it changes how tiring the screen is over a long night. Many hunters scan in white-hot, then switch to black-hot to study an animal’s outline before deciding to shoot. In thick cover or on a hot night, a highlight mode can help a warm body stand out from sun-soaked rocks.
What to look for
Palette count is not a meaningful spec; nearly every device has the useful ones. What matters more is how easy it is to switch palettes in the dark with gloves on, and whether the screen brightness goes low enough to protect your night vision. Try a unit before buying if you can, and judge palettes on a real animal, not a showroom demo.