Digital cameras & resolution

By Jakob Jelling

While analyzing any camera, one of the most important qualities of a photograph that a person seeks, is resolution. This word itself needs a brief discussion before progressing onto its implication upon a digital camera. This is a word that seems to almost every new photographer as a nightmare. With all the myths and irrelevant information circulating all around, this is quite common. This however is an effort to clear those misty myths and provide good information for everyone. Without any complexity, generally a photograph, either viewed on the screen or printed, is composed of infinitesimal dots (called pixels). The greater amount of these dots that can fit per inch of space, the smaller the dots and the sharper the image. This is the basis of understanding ... resolution!

Considering an image at 100 dots per inch that is one square inch in size. It is comprised of 100 X 100 pixels. Now changing this image four-times to four square inches. This image is quite clear. Now the same 100 X 100 dots exist, but with only 25 dots per inch. The appearance becomes grainy. This is the factor know as resolution that determines this quality of image. Hence it can now be interpreted by any person what the importance of resolution is and where it is required in the filed of photography. While purchasing a digital camera, resolution is a very important factor to take into account when settling upon buying a particular one.

Digital camera resolution comes in as Mega pixels. A Mega pixel is composed of one million pixels. The greater the number of Mega pixels, the greater becomes the standard of quality of the photograph or picture. As a standard, one mega pixel is the minimum bottom line below which a digital camera must not be usually purchased. This is a general decided value for any amateur photographers also, and the exact value of higher mega pixels is not a concern for people who do not intend to print the photographs. In an effort to scrutinize the pixels in an image out of sheer anxiety, a person can magnify the display in a photo editor, like a little magnifying glass, and they become very much visible!

The resolution decides the ultimate the future of the hard copy of a photograph being taken, whether a digital camera or a conventional camera. A print from a high-resolution photograph challenges anything produced from a chemical film camera. However a low-resolution image print of a photograph is quite appalling with fine details and restrained color transitions absent resulting from too few pixels. Thus the resolution can spoil an entire effort to freeze a memorable moment. Thus it is so vital. As a general rule a minimum of 200 pixels are required for each linear inch of a print. However, some printers get better results with 300 pixels per-inch of resolution.

The above discussion has brought into light a lot of relevant information regarding resolution and its application in the digital camera and photography. Also in the concluding lines it can only be stated for digital camera ... resolution is the real soul!


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