Aperture is also the easiest way to control depth of field. For those of you unsure of what depth of field is, it's the distance between the nearest and farthest objects in a scene that appear sharp in an image. So you need to focus carefully if you are shooting with a wider aperture (remember, smaller number) because less of the picture will be in focus.
Usually if you are shooting a scene then you want the whole image to be in focus. In this picture, the umbrella in the back and the flowers in the front are both pretty much in focus. I shot this beach scene at f/4.5.
This ends this week's edition of chalk talk. If you have any questions that you would like answered, please feel free to leave them here or on my FACEBOOK page. Remember as Scott Adams, creator of Dilbert once said, "If there are no stupid questions, then what kind of questions do stupid people ask? Do they get smart just in time to ask questions?"