3-Plus Megapixel Digital Camera Model

With a 3.3-megapixel digital camera you have really crossed over into the realms of professional-quality image-making. Cameras in this category are capable of producing good-quality ink-jet prints up to A4 size, or even greater. If work requires the type of reproduction quality demanded by a magazine, you can enlarge to A5 size; with non-critical subjects, or certain "artistic" treatments, such as graininess, blur, or other distortion-type filters, then you can safely enlarge prints to A4 and greater, since these treatments disguise any slight imperfections in image quality.

If your camera is intended for professional use, then ruggedness and reliability should be key factors in your decision-making process. In these respects, cameras in this class are generally built to a higher quality and with better electronics and a wider range of features than cameras of lesser image resolution. But bear in mind that these cameras not only cost more to purchase in the first place, but they are also costlier to maintain. This is due to the fact that their larger files require more storage space (images with more pixels take up more memory space) and larger files take more time to work with than smaller ones. So, opt for one of these higher-resolution cameras only if you really need the extra quality.

Note that some cameras give images containing more pixels than the specification of the camera seems able to produce. If so, these figure have been arrived at by adding pixels through a process of "interpolation" and may not represent any true improvement in the detail captured by the camera.

When deciding on a suitable camera, check that the connection is suitable for your computer. As was mentioned earlier, USB is faster than serial, while FireWire is better than either. In addition, check the type of battery: Li-ion or NiMH types are better than NiCd.

There is a growing number of single lens reflex (SLR) designs in this class of digital cameras, but not all of them allow for interchangeable lenses. If your photographic work is likely to demand that you use a wide range of lenses, make sure any camera you are thinking of buying is suitable.

Steve J. Wilson is living in the United States and is a freelance writer since 2006, in digital photography related topics. If you are interested in some useful Digital Photography Classes, than you are in the right place. Just follow the link and collect the informations you were looking for: http://digitalphotographyclasses.info/ Copyright © Steve J. Wilson, All Rights Reserved. All those who are interested in using this article, please make all the links active. Article Source: http://EzineArticles.com/?expert=Steve_J._Wilson

Digital Camera - Focusing in the Dark

In one method, a beam of infrared (IR) light is projected from the camera. The beam scans the scene and reflects back from any object it meets. A sensor on the camera measures the angle at which the beam returns, translates this into a subject distance, and sets the lens accordingly. However, this method is prone to interference from, say, an intervening pane of glass, which reflects the beam prematurely. The other method uses a pattern of light from the camera or flash unit, which directly assists the focus detectors to assess the image itself.

Viewfinder systems

Four viewfinder systems (to enable you to frame and focus an image before recording it) can be found in digital cameras. The simplest uses an LCD (liquid crystal display) screen to present a low-resolution image of the subject. Most cameras offer in addition a direct-vision viewfinder. This is a small lens (separate from the image-taking lens) through which you view the subject. Having this allows you to turn off the LCD and so save battery power, but since you are not viewing the subject through the image-taking lens, subject framing is prone to inaccuracy.

The best system is the single lens reflex (SLR) arrangement, identical to that in a conventional camera. It gives you an accurate view of the subject and makes focusing very easy. An alternative is what appears to be an SLR system, but the traditional focusing screen is replaced with an LCD screen viewed through the eyepiece. This screen is sufficient for framing but resolution is not high enough for precise focusing.

Steve J. Wilson is living in the United States and is a freelance writer since 2006, in digital photography related topics. If you are interested in some useful Digital Photography Classes, than you are in the right place. Just follow the link and collect the informations you were looking for: http://digitalphotographyclasses.info/

Copyright © Steve J. Wilson, All Rights Reserved. All those who are interested in using this article, please make all the links active.

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Different Digital Camera Models

The digital camera that is best for you depends on what you want to do with the images. If you only want to make small-sized prints or send images via emails, then a basic model is best.

Basic digital cameras

For many purposes, a basic digital camera - one producing image definition of 640 x 480 pixels or 1,024 x 768 pixels - is not only adequate, it is preferable to those of higher resolution. Image quality is more than adequate for use with an email, or for pictures printed small in newsletters or brochures. Most models are viewfinder-types and designs vary from small modules, which fit onto a hand-held organizer, to those that look and operate just like autofocus, film-based compacts.

Spend more and you can have a 2-megapixel camera offering a zoom lens and better quality all round. Bear in mind, however, that many basic digital models are Windows-only.

Basic model

Check that even a basic camera accepts removable memory cards - otherwise you will have to return to base in order to off-load images once the internal memory is full.

A 50x enlargement from a 2 MB image (produced by a 0.7-megapixel camera) shows poor detail and colour, but it would still give images perfectly acceptable for postcard-sized prints.

Basic models may not be able to capture images in quick succession.

A simple lens helps to keep costs as low as possible.

Kodak PalmPix

This compact unit, which links onto the HotSync terminals of a Palm device, offers VGA image quality (640 x 480 pixels resolution) at economical cost to Palm owners.

Goodmans GDC 3116

This camera is compact and neat with a basic range of features, yet can be had for a very low price. It delivers a 3-megapixel image but lacks fine quality. Nevertheless, it is worth considering as your first digital camera.

Kodak DC3400

A neat, capable camera that is very easy to use and good value, offering 1,280 x 960 pixels resolution. This model also features a 3x zoom and very good build quality for its price. Users, however, may find it bulkier than others in its class.

Steve J. Wilson is living in the United States and is a freelance writer since 2006, in digital photography related topics. If you are interested in some useful Digital Photography Classes, than you are in the right place. Just follow the link and collect the informations you were looking for: http://digitalphotographyclasses.info/

Copyright © Steve J. Wilson, All Rights Reserved. All those who are interested in using this article, please make all the links active.

Article Source: http://EzineArticles.com/?expert=Steve_J._Wilson