Identity Theft Scams – Digital Cameras
Identity Theft Scams
James H. Dimmitt
Identity Theft scams continue to flourish on the web. One that you need to be aware of and beware of is any site that seems to be selling high-demand items digital cameras for instance at a much lower almost unbelievable price than you can find on other sites or the manufacturer
Using Photos As Graphics In Marketing Your Business – Digital Cameras
Using Photos As Graphics In Marketing Your Business
Valerie Siple
More and more businesses are seeing the value of photography in marketing their business. Websites, html emails, business cards, banners. Scanners and other digital equipment is HOT! What do you need to know about the subject of photography to take advantage of photos in your business
Many memorable moments would be lost and long forgotten without photography. The most important thing to photography is light. The camera is a precise instrument for capturing light. The word "camera" in Latin means room. The name camera comes from the first invention towards capturing the world on film, the camera obscura or dark room.
This invention came about in the 14th century and was used by such artists as Da Vinci and Michelangelo to more accurately draw their subjects onto paper. The invention of this box made way for more advancements in cameras and photography.
There are five essential items in cameras that make photography possible. They are exposure, refraction, plane of focus, angle of view and aperture. Exposure is the amount of time a camera lets film be exposed to light. Refraction is the bending of light through the lenses of a camera. Plane of focus is the area where light reforms an image in the film. Angle of view is the angle created on a lens when you take the two outermost points you can see through a lens and diverge them to the exact center of the lens. The angle created will be the angle at which the camera can take pictures at. Aperture is the amount of light a lens allows into the camera.
The camera obscura, as mentioned previously, was a large room with a small hole where light could pass through. The development of the camera obscura took two tracks. One of these led to the portable box device that was a drawing tool. In the 17th and 18th century, many artists were aided by the use of the camera obscura.
By the beginning of the 19th century, the camera obscura was ready with little or no modification to accept a sheet of light sensitive material to become the photographic camera. The other track became the camera obscura room, a combination of education and entertainment.
In the 19th century, with improved lenses that could cast larger and sharper images, the camera obscura flourished at the seaside and in areas of scenic beauty.
Of course now there are much more practical ways to take photographs. From the traditional 35mm cameras to the newest cellular phones equipped with digital cameras. Big ones, small ones, and anything else you can think of. There is a camera to fit your needs and lifestyle, or even your color preference. The world of photography has certainly grown a lot over the years. Taking into consideration your usage when purchasing is key to investing in the proper equipment.
About The Author
Valerie Sipple is the webmaster of:
http://www.rgphotography.com
a great resource for everything about photography.
Digital Imaging Explained – Digital Cameras
Digital Imaging Explained
Warren Lynch
Digital Imaging is a process where an electronic photograph, scanned document, or image is converted into a series of electronic dots called pixels. Pixels is an acronym for "picture elements".
After the image is converted, or digitized, it is stored on a memory storage device which may be a hard drive or some sort of electronic storage device such as a memory stick. The pixels are stored in a compressed format to save storage space.
As each pixel is being created it is assigned a color value, called a tonal value, of black, white, shades of grey, or an actual color. These pixels must be processed by a piece of software in order for them to be called up and viewed as an actual image later.
Traditional cameras capture images onto film while digital cameras use an electronic chip known as a Charged Coupling Device CCD. The CCD is actually a grid of miniature light-sensitive diodes. These diodes convert photons light that strikes them into electrons electrical impulses. The technical name for these diodes is photosite. The brighter the light is that hits the photosite the stronger the electrical charge is thats produced.
After converting the photons into electrons, a mini-computer, located inside of the camera, reads the stored electrical value in each photograph. Then a built-in analog-to-digital converter turns the stored electrical value into a digital value. These digital values are then stored on the cameras memory storage device. When these digital values are recalled by software, and displayed on a screen, they reproduce the image that was originally captured by the camera or digital input device.
The digital image that is created by the CCD is huge. Its far too big to be easily stored in the relatively little amount of storage space thats available to a digital camera. Accordingly, the cameras computer compresses the image to make it smaller.
There are two basic methods for achieving this compression. The first method takes advantage of repetitive patterns in the image. For example, if you are taking a picture of an airplane that is flying in the sky, a lot of the picture will be a chunk of blue sky. The camera recognizes that there are multiple parts of the image containing the same digital information, so it only records a small piece of the sky. Then it simply creates a map to tell it where the rest of the sky belongs. When the picture is ultimately displayed the sky appears exactly the same as it did in the original image when it was first captured. The only difference is that the overall storage requirements were reduced thanks to the cameras clever mapping techniques.
The other method uses a procedure called irrelevancy. This methodology automatically removes digital information that is not visible to the human eye such an infra red light.
Digital imaging is amazing yet we have only started witnessing the revolutionary changes that are yet to come.
About The Author
Warren Lynch has been shooting commercial photography since 1979. Clients include Several Regional and National accounts. Sign up for"The Digital Dose" and receive his tips every other week for FREE! http://www.photopheed.com.
contact@photopheed.com