" A new technology is rarely superior to an old one in every feature."
Digital photography is a form of photography that uses digital technology to make images of subjects. Until the advent of such technology, photography used photographic film to create images which could be made visible by photographic processing. By contrast, digital photographs can be displayed, printed, stored, manipulated, transmitted, and archived using digital and computer techniques, without chemical processing.
Digital Photography. Retrieved June 1st, 2010, from http://en.wikipedia.org/wiki/Digital_photography
With modern advancements in digital camera technology there are a number of advantages over traditional film cameras these include:
-Instant review of pictures, with no wait for the film to be developed
-Minimal ongoing costs for those wishing to capture hundreds of photographs for digital uses, such as computer storage and e-mailing, but not printing
-Digital media is considerably cheaper than film
-Photos may be copied from one digital medium to another without any degradation
-Ability to print photos using a computer and consumer-grade printer
-Ability to capture and store hundreds of photographs on the same media device within the digital camera; by contrast, a film camera would require regular changing of film (typically after every 24 or 36 shots)
-Many digital cameras now include an AV-out connector (and cable) to allow the reviewing of photographs to an audience using a television
-Anti-shake functionality (increasingly common in inexpensive cameras) allow taking sharper hand-held pictures where previously a tripod was required
-Ability to change ISO speed settings more conveniently in the middle of shooting, for example when the weather changes from bright sunlight to cloudy. In film photography, film must be unloaded and new film with desired ISO speed loaded.
-Smaller sensor format, compared to 35mm film frame, allows for smaller lenses, wider zoom ranges, and greater depth of field.
-Ability to use the same device to capture video as well as still images.
-Ability to convert the same photo from color to sepia to black & white
A huge array of advantages however there could be a number of down-sides to modern digital camera technology including:
- Decreased treasurey towards photos e.g not framed or kept in albums so much, less likely to print phots now days
- A great amount of devices and software needed to purchase or carry with camera such as memory cards, chargers, cables, batteries, software and computer access.
Digital Images can be stored and transferred using other communications technology such as cellphones, computers, security cameras, Ipods or digital video forms or manipulated via photoshop.
Occupational Therapists are using digital images within their practices for example in the physical rehabilitation setting OT's carry out housing assessments where they take photos which they may use for funding applications. Community or Ward settings photoboards/albumns to capture memories and learning experiences may be constructed, or the use of digital cameras as a tool to create visual guides or feedback purposes to confirm verbal feeback is a commonality.
Given the prevalence of image capturing devices there a great number of ethical issues that may arise with their use. Relating to Occupational Therapy for example Occupational Therapists will need to consider gaining informed consent for use of images, issues regarding privacy will need to be considered. There is also the risk of capturing illegal footage and at times data transferral may be reduced due to client complience. A major consideration will go into thought around the OT's confidence in being responsible to those they recieve images of.
Flickr.com is an online photo management tool where photos can be shared all over the world. An account can be created where you upload photos. Flickr.com has two main aims:
1.to help people make their content available to the people who matter to them.
2.to enable new ways of organizing photos and video.
Retrieved from http://www.flickr.com/about/ on June 1st, 2010.
Facebook is another photo storage website which offers similar service to flickr.com. It allows you to store, share, tag and edit uploaded photos.
Camera's have a digital and optical zoom. Digital zoom simply crops the image to a smaller size, then enlarges the cropped image to fit the frame again, this results in a significant loss of quality and clarity of the photograph.
Optical zoom works just like a zoom lens on a film camera, the lens changes focal length and magnification as it zooms in closer to an image. The image quality stays high throughout the zoom range.
A megapixel is a term used for counting the number of pixels in a photograph. A pixel is a contraction of the term Picture Element, pixels are the small components that make up a picture, the small pots/squares recieving light. A regular photograph is composed of millions of tiny squares. A megapixel is 1 million pixels.
The more pixels the clearer the image.
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