Digital cameras give you several options to control their exposure. Do you know how to use them to obtain the best results for your photography?
In early SLR cameras (film) were totally manual. A photographer needed to understand the configuration of aperture and shutter and how use. Then came the automatic modes, allowing the camera do the thinking for you. This was (and still is) a fairly reliable way to get a well exposed image, but had the creativity of the hands of the photographer. As time passed, few people learned manual skills. And improvement in camera technology, the quality of most photos even worse.
Today we have the best of both worlds. All DSLR cameras and compact digital cameras have manual and automatic modes, but also offer semi-automatic modes. That means you can get a little creative, and allow the camera to control exposure for you.
If you have aperture priority and shutter priority camera, but never understood what they were, of this paper is to you.
First up, what are Aperture and Shutter Speed? These are the two mechanisms to control the level of exposure in your photos, if your photo is overexposed, underexposed, or just right. To explain adequately would take much more in-depth article, so here is just a quick down.
Of Aperture is the size of the hole that lets the light in the picture. Think of it as the iris in the eye – as the light is low, it opens the aperture opening to allow more light in. also controls depth of field, which affects the amount of the image is in focus. When you have a small opening, has a large depth of field to his subject and the environment can be in focus. When the opening is wide, the depth of field is much smaller, making it much less area around the theme that will at the focus.
Shutter speed is the length of time given to each exposure. The shutter opens to allow light, so the more time is open, the brightest of the exhibition will be. The shutter speed also controls how your motion capture in a photo. If you want to freeze a subject in movement is necessary to use a fast shutter speed.
The trick is to combine the openness and setting the shutter speed for better result. If you get the balance right, your photo is perfectly exposed, and you will have creative control over the appearance of the image.
Of course, this Easier said than done. To help manage the challenge, now has the option of opening and shutter priority. These semi-automatic modes allow take control of a stage, and the camera automatically adjusts the other. This allows you to have some creative input, with the safety net of knowing that the camera be responsible for the exposure level. You decide how you want your photo to look, and the camera make sure it is properly exposed.
Thus that, what you choose: Shutter Priority or Aperture Priority? Well, it's all a matter of priorities ….
Remember that the controls Opening of depth of field. So if the focus range is the critical element in the photo, choose aperture priority. You can set a small aperture to maximize depth of field, or a large aperture to focus the approach on the issue. Anyway, the camera adjusts the shutter speed to give the best exposure.
The shutter speed controls movement in a photo. If control of a moving subject is the critical aspect of your image, choose speed priority. This allows you to set a fast shutter speed to freeze subject movement, or a slow shutter speed to capture motion blur. Either that is the shutter speed you choose, the camera aperture to ensure that your photo is properly exposed.
So your choice aperture priority or shutter-priority depends on the type of subject being photographed, and how you want to display in the final photograph. It really is an ideal union art and technology, allowing you to concentrate on their creative choice rather than on technical issues.
There is much to learn about this subject, an article brief as this is only a starting point. However, if you've been reading your camera manual and scratching his head (as most people do) this rapid introduction in simple terms to help you make some sense of openness and shutter priority.
About the Author:
Aperture, shutter speed, depth of field, wide-angle and telephoto lenses…all the essentials of good photography seem simple when they are explained in terms you can understand. Visit http://www.naturesimage.com.au and check out Andrew Goodall’s ebook “Photography in Plain English” to discover your own talent for photography. While you are there, subscribe to the online newsletter for even more tips…it’s free!
Article Source: ArticlesBase.com – Digital Photography: Aperture Priority and Shutter Priority Modes