The difference between a 1,000-watt tungsten hot light and a strobe is the amount of heat generated during use. A 1,000-watt hot light remains powered on the whole time, continuously emitting large amounts of heat. It is possible for photo subjects to be slightly tanned after a shoot. Strobes emit high-intensity light, but in short intervals. This gives photographers favorable lighting conditions without warming up the surrounding environment to uncomfortable levels.
Power use is another significant difference between the two lights. Hot lights are constantly in operation during a shoot, causing them to use a substantial amount of electricity. Strobe lighting activates as the photo is being shot, greatly reducing electricity costs for the photographer.
According to photography supply companies, hot lights are the easiest lighting type for novice photographers to work with. (See Resources.) Professional photographers indicate that hot lights allow a person to double-check subject positioning and shadows before taking the photo. Hot lights are also the best choice for filming video or movie pieces. Strobes remain the best choice for still photography.
In an article in "Imaging Info" digital magazine, a photographer discussed reasons why architectural photographers prefer to work with hot lights. In addition to hot lights being easier to work with, the author indicated that hot lights give architectural images a more realistic appearance in photographs. It is easier to add reflective lighting, giving the appearance of depth. Photographers working with hot lights tend to shoot in the evening. Strobe photography must be done during daylight hours.