What's the difference between a photographer's camera and a digital camera used by ordinary girls?

Photographers generally use digital SLR cameras, referred to as digital SLR cameras. The camera is very big and can be changed into different lenses, including long, short and medium telephoto lenses, macro lenses and fisheye lenses. , which requires manual zooming. Use professional knowledge related to depth of field, aperture and shutter speed, exposure, etc. And girls mostly use ordinary digital cameras, which can automatically zoom, commonly known as card machine.