You use the Blending properties dialog box to control the blending of one image to the next in the overlap region.

Enable exposure matching
Selecting this checkbox causes The Panorama Factory to adjust the brightness of adjacent images to improve the agreement between the images. You should normally select this checkbox if your images were made with different exposure settings (e.g. your camera was set to automatically determine the exposure). You should normally reset this checkbox if your images were all made with the same exposure settings (e.g. you manually controlled the exposure yourself).

Enable exposure correction
Selecting this checkbox causes The Panorama Factory to adjust the overall brightness of the stitched image.  For 45-bit images, this sets the White level, Black level and Midrange to adjust the brightness.  For 24-bit images, this adjusts the pixel values themselves.

<--- Darker  0  Lighter --->
Controls the overall brightness setting when exposure correction is enabled.  The center radio button adjusts the overall brightness so that the median brightness value is at 50%.  Each radio button step above or below 0 increases or decreases the median brightness.

Load settings from profile:
Select a profile from this dropdown list to load all settings that apply to the current tool dialog box.