Some of the pluses and minuses of digital cameras, in relation to traditional film based cameras, are as follows:
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· Cameras can be small and light
· 1 memory card stores many more images than a roll of film
· Images are viewed immediately – no waiting for film to be developed
· Images can be edited
· Images can be uploaded to a computer and shared with others
· Only images that are liked have to be printed
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· Higher initial cost
· Memory cards are small so easily misplaced
· Images can accidentally be deleted
· Computer can crash when uploading and lose the images
· No physical photograph is produced
Digital images can be:
· Stored on a computer hard drive
· Stored on a memory stick or CDRom
· Transferred via email
· Transferred via websites (e.g. Blogs)
· Transferred through cellphones
· Printed either at home or in a printing store
· Manipulated using computer programmes (e.g. Photoshop)
Ethical issues can arise from the use of digital image capturing devices which include:
· Storage of the images – are they safe and protected?
· Access to the images – who has the right to look at them?
· Manipulation of the images – to take them out of their intended context.
· Consent – was this sought from person before image taken or used?
· Privacy – do individuals want their images to be distributed for others to view?
Digital images are being used in occupational therapy practice through the recording of a person’s home environment that is being assessed for modification e.g. the bathroom being redesigned for a wet area shower to be incorporated. These images can be forwarded to the appropriate funding authority to demonstrate why the current design is not suitable for the persons needs. Digital images can also be used to show clients what a piece of adaptive equipment looks like rather than trying to explain this to them http://www.disabilityfunding.co.nz/cms/imagelibrary/100426.pdf
Flickr.com is an online service where digital images (including still camera shots and video clips) can be uploaded, stored and then shared with other Flickr account users.
Another photo storage website, similar to Flickr is www.photobucket.com
Optical zoom works in the same way as a zoom lens would on a film camera; the focal length and magnification is changed by the lens as it zooms in and image quality remains high during this process.
Digital zoom works by cropping the image to a smaller size and then enlarging the cropped portion so that it fills the frame. This means that there will be a loss of image quality.
Megapixel, “refers to the size of an image, usually in reference to a photo from a digital camera or camera phone. Megapixel means one million pixels. The resolution of digital cameras and camera phones is often measured in megapixels. For example, a two-megapixel camera can produce images with two million pixels”.
(Retrieved on 13 May, 2009 from http://www.phonescoop.com/glossary/term.php?gid=145)
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