Depth of field is controlled by a camera's aperture settings, which determine how much of image will be in focus in relation to the subject you focus on. The aperture setting changes how much light is let into the camera, shown in f-stops, the size of the hole allowing light in. A larger f-stop creates a smaller aperture and larger depth of field. If aperture was set to f11 compared to f5.6, the aperture of f5.6 would have a larger opening for light and a shallower depth of field. The length of a lens can also affect an image. A longer lens will be much more blurry from the same distance as a shorter lens.
Depth of field changes based on the subject of a photo, determining how much and what part of an image you want to be in focus and draw the attention of someone looking at the photo. Usually, landscape photos are better using a deep depth of field because the viewer can see everything in the image clearly. Portraits are better with a shallow depth of field so that the background of an image won't distract from the subject in focus. When setting aperture for an image, you don't want to make it too extremely large or small because other parts of the image will loose quality. If aperture is too low on a portrait, certain parts of a face may be blurred and out of focus. If it is too high on a landscape, the image will not be as sharp.
Janet Pearson
Tuscany
Shutterbug
This photo has a very deep depth of field because it was able to keep the wildflowers in the front and hills in the back in focus. I would guess that the aperture is set to around f30 because it is very deep. The shutter speed would then be around 1/20 because the aperture is so large. I think that the lens was probably be large at 18mm because it needs to show a large area.
Cam Miller
Last Leaf Standing
Flickr
The aperture in this image should be very small because it has a very shallow depth of field. I would guess that the aperture would be around f3 and the shutter speed is probably very high around 1/100. The lens is probably around 55mm because the image is very close and focused.
Comments