At its very lowest level description, a digital camera is a camera that does not record photographs on film. However, in order to be able to do that, a digital camera requires a whole new system inside. There is nothing that a film camera and a digital camera have in common, besides the lens and the fact that it will take photos.
A film camera depends on chemicals that react to light to make colour photos, but a digital camera has millions of small sensors that record the colour that they 'see' on a chip, so that they may be accessed later.
A film camera does not require electricity unless it has a motor drive, but a digital camera cannot operate without electricity, which is normally supplied by batteries. The more powerful the camera, the more power that it will require.
Apart from these technical details of internal components, the biggest difference between a film camera and a digital camera is in the composition of the photos. Because a digital picture is made up of dots known as pixels which are recorded digitally, they can be manipulated by a computer program.
A conventional film picture may not be altered after it has been 'fixed', but a digital photo can be manipulated at any time. You simply load it into a photograph manipulation program such as Photoshop and you will be able to change all the yellows to green, brighten the lighting, sharpen the picture, alter the contrast and a hundred more things.
As with all new technology, digital cameras used to be very expansive, but the price was soon recouped because there was no requirement to buy film or have it developed into photos. This is a big saving. However, the price of digital cameras has dropped so much that the technology can be placed into mobile telephones without dramatically raising their price.
The foremost thing to look for when purchasing a digital camera is the resolution, which is expressed in terms of megapixels - the number of dots that create the picture. The more the better. At the time of writing, ten megapixels is around normal, but a professional DSLR camera might have 35 plus megapixels.
A digital camera requires a memory in order to store the images. The memory comes in two varieties like with a computer - it has on board RAM and a slot for an external memory chip, normally known as a flash card.
It is best to have a lot of internal memory but it is not vital if you use flash cards. The cards come in different sizes. The more megapixels your camera has, the more memory your camera will need.
If you want more than a point-and-click camera, consider buying an SLR or in this case a DSLR - a digital single-lens reflex camera. These cameras permit you to change lenses for special effects like fishbowl look, telephoto or macro photos. A DSLR camera with a standard lens will be about $550 so will not break the bank, but will permit you to take professional quality photographs.
A film camera depends on chemicals that react to light to make colour photos, but a digital camera has millions of small sensors that record the colour that they 'see' on a chip, so that they may be accessed later.
A film camera does not require electricity unless it has a motor drive, but a digital camera cannot operate without electricity, which is normally supplied by batteries. The more powerful the camera, the more power that it will require.
Apart from these technical details of internal components, the biggest difference between a film camera and a digital camera is in the composition of the photos. Because a digital picture is made up of dots known as pixels which are recorded digitally, they can be manipulated by a computer program.
A conventional film picture may not be altered after it has been 'fixed', but a digital photo can be manipulated at any time. You simply load it into a photograph manipulation program such as Photoshop and you will be able to change all the yellows to green, brighten the lighting, sharpen the picture, alter the contrast and a hundred more things.
As with all new technology, digital cameras used to be very expansive, but the price was soon recouped because there was no requirement to buy film or have it developed into photos. This is a big saving. However, the price of digital cameras has dropped so much that the technology can be placed into mobile telephones without dramatically raising their price.
The foremost thing to look for when purchasing a digital camera is the resolution, which is expressed in terms of megapixels - the number of dots that create the picture. The more the better. At the time of writing, ten megapixels is around normal, but a professional DSLR camera might have 35 plus megapixels.
A digital camera requires a memory in order to store the images. The memory comes in two varieties like with a computer - it has on board RAM and a slot for an external memory chip, normally known as a flash card.
It is best to have a lot of internal memory but it is not vital if you use flash cards. The cards come in different sizes. The more megapixels your camera has, the more memory your camera will need.
If you want more than a point-and-click camera, consider buying an SLR or in this case a DSLR - a digital single-lens reflex camera. These cameras permit you to change lenses for special effects like fishbowl look, telephoto or macro photos. A DSLR camera with a standard lens will be about $550 so will not break the bank, but will permit you to take professional quality photographs.
About the Author:
Owen Jones, the author of this article, writes on many subjects, but is currently concerned with tips for product photography. If you have an interest in photography, please visit our website now at Photography Studio Cameras
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