In single-image view, which you can open by double-clicking on a photo, two helpful tools are available for precisely assessing sharpness and image composition.
Peaking Mask
Click the button with the star icon in the top bar to activate the Peaking Mask. Sharp edges in the image are then highlighted in color—red by default. You can customize the color in the program settings to suit your preferences.
Use the slider next to the button to fine-tune the threshold for sharpness detection: A lower value highlights more edges, while a higher value limits the display to the sharpest areas of the image.
3×3 Grid
Click the button with the diamond icon in the top bar to display a 3×3 grid over the image. This helps you assess the image composition at a glance using classic design rules, such as the rule of thirds.
Both features can be enabled independently of each other and can also be used in combination.
