Sunday, May 24, 2009

Tutorial Two: Digital Cameras

"A new technology is rarely superior to an old on in every feature"
This statement is implying that the old traditional cameras are better than the new aged digital cameras...is this true?
Well they both actually have positive and negative factors about them.

Traditional Camera
Positives
-better quality
-durable
-lets there be an element of susprise when developing the film
Negatives
-the film used to take days to be processed but can now be completed in an hour...still what if you are in a rush?
-have to pay for photos you do not like or even want

Digital Camera
Postives
-able to keep the photos you want and delete the photos you do not want
-able to edit the photos on the digital camera before you print them eg black and white etc
-digital camera came with a usb specifically for the computer so the photos can be transferred from the camera to the computer, this can also be done by using the camera's sim card
Negatives
-becuase a digital camera allows the photos to be seen and edited and so on there is no element of susprise when getting them developed

Digital images can be stored, transferred and manipulated using other communication technology such as webcams, scanners, faxes, cell-phones, digital, video and traditional film cameras.

Ethical issues that may arise with the use of image capturing devices are the OT not getting client's consent to take photo and the photo becoming available to the public. It is important that the OT gets consent from the client to take the photo, explain the purpose and future se of the photo so the client has been fully informed and able to make their decision based on that.

Digital images could and are being used in occupational therapy practice. They provide a great way to keep records, evidence, able to zoom in on the image to identify a potential risk for example, images and videos are able to be emailed to others. An example I will provide is a community OT wanting to do housing modifications - the OT is able to capture the image she wants and put it in her report so the other party is able visually seen what the OT is describing.

Flickr.com offers services for people of all ages, some of these services are a Flickr blog, able to create a profile, upload vidoes or/and photos, and connect with friends online.

Another photo storage website that offers similar services to Flickr.com is facebook.com.

Is there a difference between digital and optical zoom?...well yes there is!
Digital zoom - crops the image to a smaller size, then enlarges the cropped portion to fill the frame. Digital zoom results in a significant loss of quality.
Optical zoom - the lens changes focal lenght and magnification as it is zoomed. The image quality stays higher througout the range of zoom.
All in all optical zoom is better!

What is meant by the term megapixel?
Well firstly what is a pixel?
Pixels are made up of very small squares, when looking at a digital photo they appear smooth and continuous just like a normal photo, pixels are what measures the quality of the photo. So now megapixels,well a megapixel is 1million pixels.

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