Saturday, May 24, 2008

Tutorial Two: Digital Camera use and applications

“A new technology is rarely superior to an old one in every feature”. Briefly discuss this statement in relation to digital camera technology. What would you consider to be some of the pluses and minuses digital camera technology holds in relation to more traditional film based cameras?

While digital camera’s may seem fantastic with new technology, the more traditional film cameras still have their place. The digital in this sense is not better in every way.

Since there is essentially no film cost, the digital camera allows you to shoot whimsically over and over until you get it right. The cost never enters into your thinking. You see the picture in colour on an LCD screen before you take it and also immediately after you take it. You can shoot for ten minutes, review what you just shot, then shoot for another ten minutes. This immediate feedback makes the digital camera a plus.
In relation to more traditional film based cameras digital takes away from the fine art, and the mystery in the film. You never know really how your picture will turn out. There is the art of developing films which is something more exciting and skilful than the instant appearance of a photo on your digital screen. The traditional still photography can and should add to and extend the tradition of fine art.

List some of the ways that digital images can be stored transferred and manipulated using other communications technology.

Pictures can be loaded from the camera to computer. Once the pictures are on the computer, they can be cropped, enlarged, shrunk, and formatted to the consumer’s desire. The pictures that are wanted can be printed out and the pictures that are not wanted can be deleted or saved on the computer or disk. Pictures can also be transferred to a CD.
The pictures can also be transferred onto photo sharing websites such as photo bucket or facebook which friends and family can look at online.

Given the prevalence of image capturing devices, and thinking about the issues discussed in tutorial one, consider what sort of ethical issues may arise with their use.

There is a responsibility to maintain as much consent for use of photos taken. A person’s confidentiality and the right to privacy should be considered when taking images.









Briefly discuss some of the ways that digital images could, or are, being used in occupational therapy practice.

Digital cameras are useful for taking images for persons with communication difficulties. The picture exchange system for children is an example of where digital images are used to give choices or as a communication. The child can use a photo of an activity from their weekend as a way of show and tell in a class situation.
Photographs could be taken of clients or their homes for references in reports such as applying for extensions on an existing home for someone with a disability.

Provide a brief summary of the services offered by Flickr.com


Flickr is an image and video hosting website, web services suite, and online community platform. It was one of the earliest Web 2.0 applications. In addition to being a popular Web site for users to share personal photographs, the service is widely used by bloggers as a photo repository. Its popularity has been fueled by its organization tools, which allow photos to be tagged and browsed by folksonomic means. As of November 2007, it hosts more than two billion images

http://en.wikipedia.org/wiki/Flickr


Name one other photo storage website which offers a service similar to Flickr.com

Photo bucket



Explain what the difference is between a digital and an optical zoom

Most cameras have both optical zoom and digital zoom. Optical zoom works just like a zoom lens on a film camera. The lens changes focal length and magnification as it is zoomed. Image quality stays high throughout the zoom range. Digital zoom simply crops the image to a smaller size, then enlarges the cropped portion to fill the frame again. Digital zoom results in a significant loss of quality as is clear from the examples below. It's pretty much a last resort, and if you don't have it in camera, you can do a similar job using almost any image editing program.

Explain what is meant by the term mega pixel

A mega pixel is a million pixels. Pixels are the smallest piece of information in an image. They are often represented using dots or squares. (http://en.wikipedia.org/wiki/Pixel).

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