The images below show a quick comparison of 6 different images.
The first image represents a quick shoot and edit of a single image file making adjustments for color, contrast, exposure and saturation only.The second image is an HDR file which is a combination of 3 different images. One exposed for highlights, one for midtones, and one for shadows. The images are then combined into one image file providing a high dynamic range that covers all the tones in the photo. This is more noticed in interior photos that include windows. The images in this second set have also had all their lines straightened to correct for wide angle distortion as best possible.