A photolamp is a tungsten filament photographic lamp featuring a large, diffused bulb, typically producing light with a colour temperature of around 3200K. This warm, continuous light is commonly used in studios for portrait, product, or video photography, providing consistent illumination that allows photographers to see the effect of lighting on their subjects in real time.
Photolamps are valued for their smooth, even light output and ability to render colours naturally. While many photographers now rely on electronic flash for convenience and power, photolamps remain useful for long exposures, controlled lighting setups, and situations where continuous light is needed.