Aperture.

Aperture its a effect that lets you refine your photos. It does this by focusing in one place, as you can see by my photos, and blurs out the rest of the image. I found this technique fun to use as you can play around with it and focus on different things. I would use this if i was going to take pictures of like a busy street, and focus on one thing, and have the rest blured out to create a nice effect.

This image is basically where the bottle is the only thing in focus, and the rest of the image is blurred. The image is darkened by how fast the shutter speed shuts.

This second image is the bottle is still in focus, however there is a slight adjustment to the background as you can tell by the computers. This image is also slightly lighter than the first.

This image you can tell by the background that the whole image is getting more focused if you look at the compters. This again is now slightly lighter than the other two images by the speed of the shutter.