digiKam Light Table inherits of the Preview Mode capabilities as it shares same tools used in background by Main Window. One very powerful feature is the Focus Points visualization while comparing images side by side.
Camera can use some points (name auto focus points) on image to make the region around sharper. Besides, it blurs the further region, in order to make an artistic product. These points are named AF points. They can be pre-defined by camera or by user, depend on model of camera. There are only two cases supported by digiKam for AF points: infocused and selected. Infocuses points are the points sharpened by camera, when selected points are the points expected to be clear by user. A point can be both in 2 cases (infocus-selected) or neither both (inactive).
Each point is not only a point on the image but a rectangle. Focus Point is used to recognize focus region of image. This is a region where image expected to be clear. Using the focus points visualization while previewing image side by side allows to be sure that the best image was taken with right in-focus shot conditions.
To Show the focus points over the preview canvas, select Show Focus Points from context menu.
As with the Main Window Preview Mode, the left and right Light Table preview canvas propose the standard options from the context menu to apply the digital asset management with your images.
To manage faces information, the options below are available:
Show Face Tags to highlight face areas over the image.
Scan For Faces to start an automatic faces detection on image.
Add a Face Tag to add manually a face area over the image.
The toolbar on top left corner of preview canvas provide also the same options to manage faces. For more details about the manual face tagging, please consult the relevant section of this manual.
As Main Window, the digiKam Light Table allows to call the tools from the View, Tools, Import, or Export menus. Unlike Main Window, Light Table does not have the concept of albums or an icon-view where you can select items to process. Light Table has a thumbbar which is a flat list of items to review with the left and right panes.
For the tools working with pre-selected list of items from Main Window icon-view, the View, Tools, and Export menu options will use the current contents from the thumbbar. For tools working with albums, nothing change, as albums still selectable at tool sessions independently than thumbbar content.
The Import tools will simply append to the thumbbar the new contents.