Monday, April 25, 2011

Shutter and Aperture

This assignment was to explore shutter and aperture (through the AV -- aperture variable and TV -- time variable settings) and how they effect the outcome of the pictures.
Below are eight pictures that help to capture this idea:




Shutter
Picture #1 -- Shutter speed of 1/60. The bike tire is blurry as the motion is much faster than can be captured by the relatively slow shutter.
Picture #2 -- Shutter speed of 1/125. When the shutter speed is doubled the bike tire is still blurry but noticeably less so.
Picture #3 -- Shutter speed of 1/500. The tire is now fairly clear, although some blurring is still seen in the spokes.
Picture #4 -- Shutter speed of 1/2000. The tire and spokes are now perfectly clear as the motion of the bike is frozen in 1/2000ths of a second.

Aperture
Photo # 5 -- f2.8. The background (our focus) is crystal clear while the foreground (with the tree branch) is blurry. This is due to the small f-stop creating a shallow depth of field, only having our focus be in focus.
Photo #6 -- f4.0. The background is still clear but the foreground is still rather blurry.
Photo #7 -- f5.6. The background is still clear and the foreground is starting to become clear.
Photo #8 -- f8.0. The background remains in focus but now the foreground is as well. The larger f-stop allows for a greater depth of field which puts our whole frame into focus.

From this assignment I learned how both shutter and apeture work to change the way in which the pictures turn out. I learned that if I am capturing motion I need to adjust the speed of my shutter (higher = stop frame, lower = blurry). I also learned that to achieve different depths of field I need to use different apertures (lower = shallower depth of field -- not much in focus, higher = larger depth of field, more is in focus).

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