Digital photography , thanks to an incredibly fast changing technology , it is now close to unseating the analog image , that is produced on traditional photographic film. The guaranteed quality from a digital camera has nothing to envy to the analog , also prices of both professional cameras , both of those amateurs, who still offer a quality all over, have subsided considerably.
But what are the features that you should consider before buying?
Producers bombard the buyer with multiple messages : the high resolution , the ability to make movies , dimensions, rather than the display . These are the characteristics that should be considered , or would it be more useful to understand and priori , based on the money you intend to spend, how you will use the camera ? And yet , what kind of photography most interested in ? These are the questions you need to ask yourself and , without being too influenced by advertising and the numerous functions that the machines are equipped , carefully considered the pros and cons of each model, relating them to your needs. Remember that there is no field in the device absolute best , but the most appropriate use to which they want to do.
Choosing a Digital Camera
One of the first features that are advertised by manufacturers is the resolution , but just recently starting to be a distinction. It is true that the amount of pixels determines thequality of the images, but it is equally true that beyond a certain value , if you do not have to make prints over 50 x 70 cm , so it does not become more critical. Furthermore , for the same pixels , the image quality is still improved compared to the past , both for the realization of new sensors with particular shapes , either because the technology has allowed to improve the structure itself of the pixels .
An example is the case of Fuji with its CCD fourth generation , or Sigma which adopted the Foveon sensor , in which each pixel is sensitive to three colors. In this case , therefore , the more than 3 million pixels of its SLR to be multiplied by three , with a final quality comparable to a camera with 9 million pixels . The choice of models is very wide and the prices vary from a few hundred to a few thousand Euros . In our comparison we will consider cameras around three million pixel resolution as the so-called ” mid-range ” , which offers a range of models is very diverse , with costs to be approximately € 250.00 less than 600,00 EUR .
A look at the technology of the Digital Camera
Digital photography is a very young technology . She appeared on the market in the early eighties , but at that time it was a topic relegated only to professional environments. There were compact cars , and the first models were prohibitively expensive , at around 40/50 million pounds . Even in the nineties , digital technology was for a select few, although many professionals were beginning to look more carefully. Only when Apple introduced the first Quicktake 100 , was the 1994 starts to open a window of opportunity for amateur digital photography .
Today, after twenty years, it has gotten to the crucial point: the specialized exhibitions now showing only devices of this type , with the analog increasingly aimed at a niche market. This phenomenon is even more pronounced in the world of professional photography, where the passage is basically already happened. To better understand the choice to make at the time of purchase, you should know what is digital technology.
The heart of the camera is the sensor , an electronic component sensitive to light , through which the image is formed . There are different types : CCD (Charge Couple camera digitaleDevice ), the first appeared on the scene ; CMOS, increasingly widespread , the Super CCD , Fuji patent now in its fourth generation , and the Foveon . When shooting , the light hits the sensitive elements that make up the sensor , called pixels , which generate electrical charges that are transferred to an analog-digital converter . Its task is to transform the signals and send them to the internal memory to the camera, or to the outside , if you are using memory cards . The number of pixels present in the sensor expresses the resolution of the image : the higher the number the greater the amount of detail present in the photograph , and therefore the quality ; many pixels however, also means large files that need to be stored on adequate supports . Even in the field of memory cards have made great strides : the sizes are different, developed by the various houses, as well as their capacity, which can range from 16 megabytes to several gigabytes.
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The Digital Camera fits
The band considered includes cameras with a resolution of around 8 megapixels. Cameras capable of creating images of good quality, both for the discrete resolution offered by the sensor , both to the envelope of the machine. The resolution is always publicized than the maximum allowed , but you can also choose to lower resolutions do not have a lot of pictures “heavy” in terms of Megabytes.
Obviously, this leads to a lower quality , but if the photos are to be viewed only on the computer and sent via e-mail, or enter on a website , there is no need to have files larger proportion. Most of these machines has objectives of fair quality, which allow a certain flexibility of recovery. Design is stylish and robust, and has many features to intervene on the type of image that you want to accomplish.
Almost all of them have a small internal memory, often insignificant , but what you have to watch carefully is the type of storage medium that uses separate . May be the Compact Flash or the latest Xd Picture Card , or SD (Secure Digital). Some offer the opportunity to use, in addition to the cards mentioned, also the IBM Microdrive , which has a capacity of 1 GB . Included cards are usually given 32 or 64 MB , but you can buy additional cards of considerable capacity : 512MB , 1 Gig and beyond.
If you often have to choose the highest quality , therefore you will need to procure large capacity cards , which unfortunately still cost a lot, a few hundred euro . For example, the Casio Exilim EX- ZR700 features included a 16Gb card , only useful if you want to shoot at high resolutions , while the WX80 compact camera with 8x optical zoom Sony did not offer any , so you’ll have to consider the higher price for the purchase of the card.
With these cameras , we can face any kind of situation , from portraits at home to vacation pictures , rather than small reportage . They have a small built-in flash , up to about five feet to solve any kind of situation, have specific programs for editing and shooting to help the inexperienced, or simplify shooting even more amateurs ” navigated ” . Some models have the ability to record voice comments to the pictures and also record small cutscenes .
Not all combine audio and video, so it may be the only available video recording, as in the case of the Fuji Finepix A303 . Beware though , the movies , as far as possible , take up a lot of memory , so if you are very interested in this feature Equip with a ” spare memory ” adequate. An important specification to consider is then supplied the batteries, still sore point when it comes to digital cameras.
These machines are completely electronic in their functions , they consume a lot, and it is not difficult to find with the batteries right in the worst possible moment . It is therefore preferable to choose models that use rechargeable batteries , which although more expensive , to allow long a distinct advantage from the point of view of savings. Unfortunately for now this range of cameras still rely on standard “AA” batteries , except for the SQ and the new Coolpix Fuji Finepix M603 , both with lithium batteries and equipped with battery charger.
Otherwise, do good supply of batteries and try to consume less energy as possible. Some changes can be, for example, move the zoom lens only when necessary, or avoid using the often bright display on the back. If the unit has its own viewfinder, try to use the one that gives you, in addition to consuming less energy, to frame more accurately.
And above all, if there is no real reason, resist the temptation to look at the photos immediately.