We have looked at how the aperture allows up to change the depth of field (length of focus) in our photos. NOW we will see how the shutter speed allows you to capture movement! Remember, each setting in Manual allows you to adjust your camera's exposure to light. When we change any of those settings, the others will need to be adjusted as well! For Example: When you look at the dials below, imagine them controlling your exposure... If you slow down your shutter speed, it would increase the lighting. You would then need to make your aperture size smaller (which is a larger number...weird sounding, but it is because it is a fraction!) or make your ISO lower/less sensitive.
So what does shutter do??? Well, so far we have used shutter speed as our last setting...a way to adjust our exposure level to fit our aperture and ISO settings. Now we will start with our as our priority! Shutter Speed allows you to capture movement in a photograph. While the shutter is open, it will capture ANY movement that is happening. So you can have the ability to freeze a moment in time by using a fast shutter speed. Or you can see the movement of an object by have a slower shutter. Look at the examples below. Notice how as the shutter speed gets faster, less movement is captured. Also, notice how the ISO and aperture need to adjust to allow for the change in shutter speed.
Most action is frozen! shutter 1/125 ISO 800 F4.5
Some blur present shutter 1/30 ISO 200 F5.6
Getting blurry! Shutter .6" (.6 of a second) ISO 100 F16
She looks like she's moving at super speed! Shutter 1" (1 whole second) ISO 100 F20
Assignment: This assignment will be easier with a partner...if you really like to work alone, you will need to get creative (and may want to use a tripod). -Have your partner create some sort of movement. Repeat the SAME movement for EACH photo! -Capture that movement at different shutter speeds. *Try going from whole numbers (the numbers with the " next to them) all the way to around shutter 1/250.* -You will need to adjust your ISO and aperture as you change your shutter. *Be sure to LOOK at your photos as you take them. If the exposure is off, retake it! If you missed the movement or it was a bad shot of the movement, retake it! -On slower speeds, brace your arms or set your camera on a flat surface if a tripod is not available so you don't add your movement into the photo! -When you get to faster speeds, you may want to use the shutter burst option (it takes a burst of photos). If the option is not available, just keep snapping. -We don't need to see the entire person (or any of the person really) in your photo. It is only necessary to see the movement. So for example, if you are spinning a top, we don't need to see the hand that spins it...but you can! -You will post 4 GOOD shots of your partner's action.
How you will be assessed: -4 photos each showing a change in shutter speed with the same movement -Each photo is a GOOD photo showing the movement. -the photo should be in focus...if the object itself is blurry because of your shutter speed, that is okay! But the background should not be blurry. -good lighting/exposure (not dark or overbright) -edit photos as needed for lighting and crop. -title the assignment "Shutter Speed and Movement" -publish your page and post your URL to Canvas.