The setting "TV" on my camera stands for "time variable", which basically means I can set the amount of time the shutter is open (shutter speed) but the camera automatically sets the ISO and the aperture.
One of the things we learned is that you can generally hand hold your camera at 1/80 of a second without blurring the picture unless you have a stabilizer on your lens at which point you can usually do 1/8 of a second for a hand held shot. But, if you want to have a longer shutter speed than 1/8 it's best to use a tripod or to stabilize the camera with something. There are other ways to stabilize your camera if you don't have a tripod.
A fun exercise we did was setting our shutter speed at 3.5 seconds and then moving the camera around in circles to get a blur. I went home and did this with a few different things. This may seem obvious, but I actually had to think about it. When you have a longer shutter speed, the first click you hear when you press down is the main portion of the picture and then for 3.5 second whatever you do with your camera is what gives the effect. I wasn't sure if the effect comes first and then the final picture, but that is not the case. Here are a few samples of this kind of "art."
Below, I was trying to write the letter "L" in cursive in the frame. At first I was making the "L" motion too large so it exceeded the scope of the initial shot. Once I realized that I got something closer to an "L" in the second picture below....
Our instructor told us about a shot he did at a Mexican food restaurant. While shooting the strobe light signs, he moved his camera around and it made a really interesting effect. Apparently strobe light flash on and off, unperceived by your eye, so it make an especially interesting picture which apparently is hanging in a museum in Germany. A fun thing to play around with!
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