What might happen if a built-in flash is used improperly?

Using a built-in flash improperly can indeed create harsh shadows in your photographs. When the flash is positioned close to the lens, which is typically the case with built-in flashes, it can produce strong, direct light on the subject. This direct lighting often results in pronounced shadows that can be unflattering and distracting, especially if the subject is not positioned carefully. Harsh shadows can cause uneven lighting and diminish the overall quality of the image.

In contrast, an appropriately used flash can create softer, more diffused light, which tends to enhance the appearance of a subject, but when used improperly, the negative impacts like harsh shadows take precedence. Understanding the positioning and timing of the flash is crucial in avoiding this common pitfall in photography.