Saturday, March 6, 2010

Tutorial Two: Digital Imaging

"A new technology is rarely superior to an old one in every feature". New technology never really replaces the older technology. Often the new technology is just an updated verison of the older technology.

Digital images can be stored transferred and manipulated using other communications technology. For example Photoshop alows fTuor images to be manipulated. The website "Flickr" allows for photos to be uploaded.

There are ethical issues involved with devices that capture images. Any person that is in a photo must give their consent to be in the photo. If the photo is uploaded so the public can view it the individuals in the photo must also have given their permission for the photo to be uploaded.

Digital images are being used in Occupational therapy practice. Digital images can be used to educate clients on the different ways to do a particular task.

Flickr.com is a website that allows people to upload their own photos and share them with other people. Both videos and photos can be uploaded to the flickr website.

Zoomr is another photo storage website that is very similar to Flickr. com.

There are different types of zoom on a digital camera. Opticial zoom is when the lenses change focal length and manification as its zoomed image quality stays high throughout the zoom range.

Digital zoom crops the image to a smaller size and then enlarges the croped portion to fill the frame again. This results in a significant loss in quality and is prety much a last resort. It can make the image eight to twelve times larger than the orginal image.

Photos are composed of millions of tiny spquares called pixels. A megapixel equals one million pixels.

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