Thursday, May 14, 2009

tutorial two~ DIGITAL CAMERA USE AND APPLICATIONS

Like all new pieces of technology there are pros and cons to go along with it. Traditional film based cameras have the advantage of clear quality photographs which are a surprise as to how they are going to turn out and actually require skill to take a truely good photo where as digital cameras do not. However digital cameras also have advantages. Cheap photo printing (you are even able print photos in your own home), larger memory capcity, transferrible to other technology, can edit photos prior to printing them, optical and digital zoom, user friendly with a larger screen to see the image on.

Digital cameras can store images on the camera itself . on a memory (SD) card, computers (online and on the harddrive), cellphones, USBs and ipods etc.The advantage of this over traditional film based cameras is that you can then delete the photos when you are ready and reuse the storage space.To transfer the photos you can often use the same technology which can often be shared between devices or have a send option. The editing function is usually attached to such devices as the camera itself, cellphones, computer programmes and instore photo printing machines.

Increased ethical issues surround digitial photograpphy due to the easy transference of images. Someone may take a picture of someone else and place it on the internet without their consent where people all around the world are able to access the image.

Digital cameras are comming more common place in Occupational Therapy settings. Refer to tutorial one to see how we used digital cameras on my placement.


The website http://www.flickr.com/ is an online community where accound holders are able to upload, store and share images. This site is renowned for bloggers storing their images here.

Another photo storage website which offers a service similar to flickr is http://www.photobucket.com/

Most digital cameras have both optical and digital zoom but what is the difference.
optical zoom is a better quality zoom as the camera lens moves in closer to the object when taking the photo to magnify the image.
digital zoom crops the image and enlarges that cropped area until it fills the screen area causing a loss of picture quality.

Each digital image is made up of millions of tiny squares (pixels).
1 Megapixel (MP)= 1 million pixels.
A camera with 3 MPs would be suffiecient if producing 6x4 photos however a larger pixel count would be better for producing larger photos.

For more info on digital photography follow this link http://photo.net/equipment/digital/basics/


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