Rear focus is a photographic term that refers to the area behind the main subject that remains in focus. Unlike selective focus, which isolates the subject by blurring the background, rear focus ensures that elements in the background retain sharpness, adding context and depth to the image.
This technique is useful in landscape, architectural, and product photography, where both the subject and background details contribute to the overall composition. Proper use of rear focus can enhance spatial relationships and provide a more immersive visual experience for the viewer.