What's the difference between a photographic lamp and an energy-saving lamp? Which is more expensive?

Photographic lights usually refer to lights that can help you truly restore colors. Color temperature is not the most important. For example, low color temperature lamps are used in movies. At present, most of the photographic lamps on the market refer to energy-saving lamps with a color temperature of about 5500K, and many of them are junk products, not even tricolor (because photographic lamps are only used for taking pictures, the utilization rate is much lower than that of ordinary energy-saving lamps, so some products actually have a short life and cannot be used for photography at all)! The key of photographic lamp is color development, and color temperature only helps white balance.