What's the difference between a camera with flash and a camera without flash?

The difference is that it is very convenient to shoot with a flash in a dark environment. If there is no flash, it is more difficult to shoot, such as adding lights and tripods, using a good camera (full manual exposure, high sensitivity and good anti-noise performance) and high photography technology. Because the direct use of flash on the camera will blunt the image and destroy the atmosphere of the scene, good photographers generally use flash as little as possible, and professional SLR cameras generally don't have flash.