The camera lens angle can have a significant impact on the depth of field, which is the distance range in a photo that appears to be in sharp focus. A wide-angle lens can create a greater depth of field, meaning that more of the scene will be in focus, from the foreground to the background. This can be useful in landscape or architectural photography, where you want everything in the frame to be sharp and in focus. On the other hand, a telephoto lens can create a shallower depth of field, meaning that only a small portion of the scene will be in focus, while the rest of the image will appear blurry. This can be useful in portrait or wildlife photography, where you want the subject to stand out from the background.
In surveillance applications, the depth of field can also be an important consideration. For example, a wide-angle lens with a large depth of field can be useful for capturing a broad area, while a telephoto lens with a shallow depth of field can be useful for focusing on specific details or objects within the scene.