Double-clicking on a photo opens the single preview view. This view displays the enlarged photo along with various details in the right and left columns of the screen.
The left column shows general information about the file, while the content of the right column changes depending on the selected information icon.

The following options are available:

Under Metadata, there are several data views to choose from.

Additional details can be found in the respective sections of this documentation.
Quick Navigation
You can quickly navigate between photos using the left and right arrow keys.
Comparison View
To directly compare two photos, you can switch to the comparison view. This allows you to evaluate and compare photos side by side. The photo in the right panel (candidate) can be promoted to a new favorite using the button below the images, allowing you to continue the selection process until the best photo is chosen.
By default, both images in the comparison view are zoomed and panned in sync. Clicking the button with the chain link icon above the images unlocks the two views, allowing each image to be zoomed and panned independently. This is particularly helpful when you want to compare details in different parts of the two photos.
