Get the new black-and-white infrared look by using clever RAW conversion settings
Black-and-white infrared capture turns skies dark, so dial down the Blues slider to –100. Try the same thing with the Aquas slider. Decreasing the Aquas sometimes augments the effect, but sometimes it makes no difference at all.
While a great starting point, the HSL/Grayscale tab doesn’t take your image all the way to an infrared look. If cranking down the Aquas slider creates banding, turn it back up; you can always darken the sky later. Same goes for darkening the Blues slider.