HSL (High Dynamic Range) is a feature that was introduced in Lightroom Mobile version 2.0. It allows you to capture photos with greater range of brightness, from the darkest shadows to the brightest highlights. This can be helpful when you want to capture details in dark areas or when you want to create a photo that has a wider range of colors. To use HSL in Lightroom Mobile, open the photo you want to adjust and tap on the three lines in the top left corner of the screen. From here, tap on HSL and select one of the three options: Auto, Basic or Advanced. Auto mode will use your phone’s default settings for brightness and color, while Basic mode will let you adjust only brightness and color, while Advanced mode will allow you to adjust both brightness and color as well as contrast. ..