Showing posts with label digital photography image quality. Show all posts
Showing posts with label digital photography image quality. Show all posts

Monday, 12 April 2010

Digital Photography Image

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digital photography image

How to Solve Digital Photography Image Problem

Many people have unrealistic expectations of digital photography. They may believe that digital photographs are 'perfect' in terms of colour and detail. In fact, many problems can occur -- some of them are an inherent part of the digital domain, while others can be caused by incorrect settings on the camera. Here are a few simple way to solve image problem.


1.Reducing Noise


Any part of a digital image that was not present in the original scene is referred to as 'noise'. It may appear as specks in the photograph, washed out areas of white, or blotchy patches where there should be an even gradation of shade.


There are several things you can do to keep noise to a minimum. It is most noticeable in shots with extended exposure times or high ISO settings. ISO settings are related to film 'speed' -- high-speed film can capture images at very short exposure times. This is ideal for action shots such as athletic events. However, High ISO setting produce more noise than low ISO settings.


Similarly, long exposure times also introduce excess noise. Long exposure settings can be used to take pictures in low light conditions such as dimly lit interiors. Keeping ISO settings low and exposure times relatively short will minimize noise as you take photographs.


2.Colour balance control


Digital cameras can be adjusted for colour balance but they need to have a reference point. This is what the white balance control does -- using white as a reference point, the digital camera can, in theory, accurately reproduce all of the other colours.


Most cameras can be set to automatically adjust the white balance. This setting is usually the most appropriate but for tricky light situations the automatic setting may be turned off to allow the photographer to manually adjust the camera. This can also be used for artistic effect -- a white balance set to an extreme can produce weird, unearthly colours.


If you have the opportunity to re-shoot a scene which has been improperly exposed, by all means go ahead and try to improve the image. However, if the scene cannot be re-created, save the image and try to work on it with software.


3.Choose the best Quality lense


If you are using lense and image quality is important to you, be sure to get good-quality glass lenses .A bad lens is going to give you bad images. That is why it is essential to choose a digital camera with the best quality lens you can afford.


Get good-quality glass lenses and keep them well maintained. Dirt and dust on lenses can cause distortion and noise in the final image, so keep them as clean as possible without excessive handling. A soft brush and a blower should be all that is needed if the lenses are kept covered when not in use.


4.Use Imaging Software


Professional imaging software such as Photoshop can be used to correct colour irregularities, white balance, lens distortion, incorrect exposure, and blurring.


Digital photographs, after all, are computer data which can be manipulated down to the bit level, so it is always possible to change the minutest detail of any image. Software can automate many of these corrective functions, and manual manipulation is also possible to improve any digital image.


You can learn more image problem at Digital Photography Guide and get 7 tips to Take Great Pictures with your Digital Camera at Digital Photography Secret


About the Author

Joel writes informative articles on various subjects including how to solve image problem . Read more at Digital Photography Guide, Profit Photography .



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digital photography image5

Friday, 6 November 2009

Digital Photography Image

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digital photography image

Digital Photography : An Introduction

Digital photography is a form of photography that uses an array of light sensitive sensors to capture the image focused by the lens, as opposed to an exposure on light sensitive film. The captured image is then stored as a digital file ready for digital processing, viewing or printing. Until the advent of such technology, photographs were made by exposing light sensitive photographic films  and used chemical photographic processing to develop the image. By contrast, digital photos can be displayed, printed, stored, manipulated, transmitted, and archived using digital and computer techniques, without chemical processing.

Digital photography uses an electronic sensor to record the image as a piece of electronic data rather than as chemical changes on film. Some other devices, such as cell phones, now include digital photography features. A digital memory device is used to store the images, which may be transferred to computer later to see the bigger image and if needed some amendements can be done to the photographs taken. The quality of digital photographs mainly depends upon certain factors that make a nice difference between ordinary and digital photographs. The factors like the quality og digital camera itself, lens quality and its resolution, the format of captured photos like RAW or JPEG etc, the processing of the pictures that means the pictures are digitally processed or chemically processed.

Digital photography has put its tremendous impact on the society in its viewpoint on how the people see the photographs. Throughout the history of photography, technological advances in camera production, developing, and imaging have had an effect on the way people view images. Previously most printed photographs were black and white, and need to generate color photos began to rise. Photographic images have always been prone to fading and loss of image quality due to sun exposure or improper storage of film negatives and prints. Since digital images are stored as data on a computer, the image never loses visual quality, detail, or fidelity as long as the digital media remains intact.

There are some tips to be followed by every photographer while taking digital photographs. Don't buy expensive cameras, the digital photographs can be taken with inexpensive digital camers so no need to spend more on expensive cameras. Use tripod, if someone has shaking hands while taking shots then its better to use tripod and get better pictures by setting time etc. Take photos regularly,
try to photograph something every day. If you can't do that, make sure you take time to practice regularly, so you don't forget what you've learned.


About the Author


Also Read about street photography and Digital Photography and development photography



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digital photography image5
digital photography image5