'Wide dynamic range’ (WDR) refers to the difference between the light levels of the darkest and brightest part in a scene. An image with a low WDR would depict a landscape on a cloudy day. So if you have varying light conditions in the shot, the technology in the camera will balance the lighting for one clear image.
DoF is the distance between the nearest and furthest parts in an image that are ‘acceptably sharp’. Ensuring that your zone of acceptable sharpness is correct, will improve the quality of your image. In addition, using a high quality autofocus lens will help too.