QUOTE(FourBlades @ Jan 13 2009, 05:57 AM)
OK, here is a really dumb question: why are flashes better than just having big
wattage lights that are always on? I can check if my camera can mount additional
flashes but I don't think so. I have a canon film camera (shudder) that does, but
man, film!
I need to dig up the manual for the fuji...
John
Not a dumb question...
Flashes have one main advantage... WAY more light, and that light is delivered in a fraction of a second. This allows for shorter exposure times, and for creative effects like the sunset behind the mini you can light with flash and hold the shutter open to let some ambient in as well. Flash can put out so much light that you can bounce off the ceiling and still have a short exposure time. Flash is very harsh, direct light unless you diffused it by bouncing or with an umbrella or softbox. A big downside to flash is that once you reach the limit, you cannot get more light. Longer exposure does not help. You get all that you will get within a fraction of a second. Flash makes it much more difficult to envision what your lighting looks like... you either need studio units with modeling lights, or simply trial and error. Flash approximates the color temp of sunlight, which is good for outdoor use, and you can use a gel over the flash head for indoor use if you want to match incandescent or fluorescent lighting. With "hot" lights, the main way to control how much light you are getting is by moving the light closer or farther from the subject. Light obeys the inverse square law... if you move the light closer to the subject, the light output increases as the square of the distance. Twice as close = four times the light. Too close, though, and you'll get light falloff around the edges... you have to make sure to light the entire subject.
You'll do fine learning with your shop lights. You can see what you are doing. Studio lighting is an art... I am a "professional" photographer, and I consider myself not very good at studio lighting. I did get to use a $5000 lighting setup once, and that made lighting much more fun because of the control that it gave me.