When should you use flash?

You should use flash primarily in situations where there is insufficient light or when you need to freeze motion to prevent blur.

Based on the provided information, here are the key scenarios for using a flash:

*   **To compensate for lack of brightness:** This is essential when shooting in **dimly lit situations like indoors or night scenes**. The flash provides the necessary light source to properly expose your subject and the scene when natural light is scarce.
*   **To prevent camera shake and subject blur:** Thanks to its **instant exposure**, using the flash can be highly effective. The brief, bright burst of light illuminates the subject for a very short duration, essentially freezing any movement of the subject or the camera during that moment. This helps in capturing sharp images, especially in challenging lighting conditions where slower shutter speeds might otherwise be needed.

Here is a summary of when to use flash:

| Situation                       | Purpose                      | Benefit                         |
| :------------------------------ | :--------------------------- | :------------------------------ |
| Dimly lit areas (indoors, night)| Compensate for low light     | Proper exposure, visible subject |
| Motion in low light conditions  | Provide instant exposure   | Prevent camera shake/subject blur |

By utilizing flash in these specific situations, you can overcome common challenges in photography and achieve clearer, well-exposed results.