Use Urban Lightscape for exposure correction, localised brightness adjustments and the introduction of artificial lighting to a photo. By placing control points on the photo, you are able to lighten or darken (dodge or burn) at these points, with Urban Lightscape cleverly interpolating between these points to infill adjustments across the entire photo.
The Urban Lightscape effect works best on photos that feature smooth gradients punctuated by sharp edges. The urban landscape of concrete, tile, glass, roof and sky is exemplar of this, so it is from here that the product draws its name.
Working with panes
The window consists of three panes:
1. The Preview pane provides a preview of the filtered image,
2. The Light settings pane is used to control the interpolation of light between control points on the image/
* Spread controls the radius of effect around each control point. Increasing the slider will increase the radius, while decreasing the slider will decrease the radius.
* Smoothness controls the balance between staying true to the precise adjustments that you have made at each control point, versus obtaining a smooth effect across the entire image. Decreasing the slider will favour staying true to your precise adjustments, increasing the slider will favour a smoother result at the expense of precision at each control point.
* Blacks controls additional desaturation and blackening at the darkest extremes of the original image. A large increase in light in a dark region can produce spurious colour as a result of camera sensor noise; this slider corrects for this.
* Whites controls desaturation of the lightest parts of the processed image. A large increase in light in some regions can produce pure primary or secondary colour (red, green, blue, cyan, yellow or magenta); this slider corrects for this.
* Brightness controls the overall brightness of the image.
3. The Channel mixer pane controls the mixing of red, green and blue channels into a single lightness channel.