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The Tree & Sky selection tool is available once you have dragged in both Tree and Sky labels.

The tool is used to automatically find and label areas of the image as either tree or sky. If you drag or “scribble” over a complex area where trees are silhouetted against the sky, the trees will be automatically labeled tree and the sky automatically labeled sky. The area it looks for tree and sky in is determined automatically, but it will tend to search in larger areas if you are scribbling quickly.

It is important to have good sky selections if you are making dramatic changes to the sky.

Tips: If you want to isolate a tree from a different kind of background, try using the Smart Brush. 

The Horizon line tool allows you to quickly separate Sky from Water and Sky Reflections. Once the horizon line is set, no pixel below it will be labeled Sky and no pixels above it will be labeled Water or Sky Reflection. The horizon line is also used in the lighting calculations, in computing sky reflections and in the straightening tool in the Fixes section.

The Horizon line tool allows you to quickly separate Sky from Water and Sky Reflections. Once the horizon line is set, no pixel below it will be labeled Sky and no pixels above it will be labeled Water or Sky Reflection.

The horizon line is also used in the lighting calculations, in computing sky reflections, and in the Straightening tool in the Fixes section.

Click and move the mouse up and down to match the Horizon line to the horizon in your image or where the horizon would be if it is hidden.

The Object in Sky tool works similarly to the Tree & Sky tool. Instead of un-mixing Trees from Sky it automatically un-labels objects silhouetted against the sky when you scribble over them. It is important to have good sky selections if you are making dramatic changes to the sky.

The Object in Sky tool works similarly to the Tree & Sky tool. Instead of un-mixing Trees from Sky it automatically un-labels objects silhouetted against the sky when you scribble over them. It is important to have good sky selections if you are making dramatic changes to the sky.

The smart brush tool is similar in use to the Pull tool, but is better at fine detail work. In simple usage, you pull from an existing selection to extend it, just like the Pull tool. You can lock selections in exactly the same way as you would with the Pull tool.

There are 3 different modes for the smart brush, that can be switched between using the drop down next to “Find”. The brushes can be switched between using a keyboard shortcut as indicated by an underline in the dropdown.

Solid, Opaque Areas will look for larger, hard edged areas, like branches or girders.

Feathered, Translucent Areas will look for edges that are not well defined, or objects that are either partially or wholly translucent. For instance, use on grass, and finer edges to trees or plants in the distance.

Everything inside brush stops the brush being ‘smart’ and looking for edges, like a normal solid brush.

The smart brush tool is similar in use to the Pull tool, but is better at fine detail work. You pull from an existing selection into another area to extend it. You can lock selections in exactly the same way as you would with the Pull tool.

There are 3 different modes for the Smart Brush. Use the drop down menu next to “Find” to switch between them.

Solid, Opaque Areas detects larger, hard edged areas, like branches or girders.

Feathered, Translucent Areas detects edges that are not well defined, or objects that are either partially or wholly translucent. Use on grass, and finer edges to trees or plants in the distance.

Everything inside brush stops the brush being ‘smart’ and looking for edges. It will now act like a normal solid brush.

Tips: When the Smart Brush is selected, you can switch between the modes by pressing S, F or V on your keyboard.  

The expand tool is for removing fringes around the edges of objects when you make dramatic changes. Similarly to the Pull tool, it will expand which ever area you hover the center of the brush over. However, instead of selecting large areas, it just expands the selection by a single pixel inside the brush (which is often very subtle, so zoom in to see the difference). You can use the brush multiple times to continue expanding the area.

The Expand tool is for removing fringes around the edges of objects when you make dramatic changes. Like the Smart Brush, it will expand which ever area you hover the center of the brush over. However, instead of selecting large areas, it just expands the selection by a single pixel inside the brush. You can use the brush multiple times to continue expanding the area.

Tips: The Expand tool makes very subtle changes. Zoom in and out using your mouse wheel, the + and – keys, or the Zoom slider in the bottom right of the image.

Unlike the rest of the tools, the Reflection Edge tool does not use a brush on the image. Instead, simply use the sliders to refine the edge between Water and Sky Reflection areas. This tool is especially useful when you have a rippled edge between the sky reflections and the rest of the water, as it will soften the edge in a way that respects the existing ripples and produces a natural looking result.