What is the difference between same wattage strobes (flash) and continuous lights. I want to shoot still life, and want to buy a studio light kit, always felt that the flash speedlites has no difference with the common continuous lights.
Two main reasons flash is used over continuous lighting.
Power. Lighting a scene for minutes uses much more power than lighting it for a fraction of a second. You may have noticed that most continuous lights need to be plugged in to a power supply, while most flash units work with small batteries. It may not make much difference if you're shooting indoors in a studio, but if you're out in the field and have to move around, it can get difficult lugging all that gear around.
Duration. A flash unit provides a very brief flash of light while a continuous unit is, well, continuous. A flash can freeze action much better than just using the camera's shutter. Try it yourself sometime: turn on the lights in the bathroom (and/or bring in your continuous light units) and take some pictures of a dripping faucet. Now turn off the lights and take some flash pictures of the same thing. See the difference?
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