As part of my independent study, I had to take a step backwards this week. I have become “skilled” enough with the camera to poke my way through the settings, but I did not really understand the specifics of aperture and shutter speed.
Aperture and shutter speed have an inverse relationship. When you lower the aperture, you increase the shutter speed. Essentially, a higher aperture means more visual information within the frame is in focus, but the lower shutter speed means an object in motion will have motion blur, because the shutter stays open longer to allow in enough light. Lower aperture means less of the frame is in focus, but objects in motion can be frozen in time. This is what I use to cover sports for the most part, for obvious reasons.
These two pictures illustrate the difference.
In the first, higher aperture means the pot hole and the surrounding street, sidewalk, etc are in focus. The car, though, has significant motion blur because of the low shutter speed.
Here, I lowered the aperture and increased the shutter speed. As a result, less of the frame is in focus, but the car has significantly less motion blur.