What you need to know about Digital Cameras : Camera shopping sale online

What you need to know about Digital Cameras
by Everton Andre
This article was based on the link below: Http://www.cotacota.com.br/preco/camera_digital.asp
This guide seeks to guide those who wish to enter the world of digital photography as it is very common topar with a huge amount of technical information complicated for most mortals.
As a guide you to be able to choose what type of camera fits better to their needs and thus evaluate the different offers that are on the market.
The digital camera has revolutionized the process of capturing images, contributing to the popularization of photography.
Instead of using the photosensitive layer (film) for the registration of the images, which requires, after the acquisition of images, a process of revelation and expansion of the copies, the digital camera records the images through a sensor that among other types can be CMOS-type or the type CCD, storing the images on the camera or memory card. Each camera supports one or more types of memory. As the most common the CompactFlash, Smart Media, Memory Stick, Sd Card, MMC and XD).
These images can be viewed immediately on the monitor of the camera and can be erased if the result has not been satisfactory. They can be transferred through e-mail, virtual album, or simply presented on the TV screens.
One of the features most exploited by manufacturers of digital cameras is the resolution of the sensor of a camera, measured in megapixels.
In theory, the higher the number of megapixels, the better the quality of the photo generated, because its size will be larger and will allow more zoom and enlargements without loss of quality. However, the quality of digital photo does not depend only on the resolution in megapixels, but of the whole way that a digital camera. The factors that most influence the quality of the photos / videos are the quality of the objective lens, the algorithm (software camera's internal processing the data captured) and the resources that the photographer can use to a better outcome, or even possible effects special in the picture. However, depending on the use to be made to the photo, too many megapixels will not bring additional benefit to the quality of the image and onerará the cost of the equipment.
Normally the cameras geared to professional use are endowed with greater quantity of megapixels, enabling them to make major expansions. For the common user, machines with resolution between 3 and 5 megapixels generate excellent results for the common use.
The best camera, then, is one that can take a picture with the largest number of pixels, right?
Wrong, for two reasons:
-- From nothing worth an avalanche of megapixels, if the user will not need pictures larger than 10 x 15 cm;
-- There are other important functions that the user needs to check before buying your machine. It is consensus among the experts that for users and amateur pictures of family travel, the average would be the sensors, at least 3 megapixels (2,048 x 1,536) to achieve reproducible photos with dimensions of 18 x 24 cm. Most of the most popular cameras currently is at the level of 5 megapixels (sets of 2,560 x 1,920 pixels on the sensor), which can reach reproductions of good quality up to 30 x 40 cm.
If the user wants to employ their photos on posters or banners, a camera, high resolution is welcome. Models of 8 megapixels may produce good quality images of up to 70 centimeters by one meter.