Digital camera Basics ... Vocabulary
Shopping for a digital camera is a difficult task for the multitude of options in the face. The number of producers, models and price ranges that can be solved to make the process difficult enough, but in all the passwords that must be understood, and even a short list of cameras it is difficult to analyze ethical issues.
This suggestion Tech to look at a couple of key words, which are, perhaps, ifExploring a digital camera, and hopefully reduce the headaches associated with the process.
Pixels
The digital images of thousands or millions of tiny squares called picture elements or pixels for short together. Each square is assigned its own color, and coordination of all these little colored squares allows for images to appear smooth when viewed in its original format. If an image is magnified several times, the appearance of the pixels becomeevident at high magnifications each colored pixel can be distinguished individually.
Megapixel
Basically term megapixel means one million pixels, and is used to describe the maximum number of pixels digital camera found in a created from a photo. It 'usually the criteria for the cameras, classify and control the selection Geeks.com (http://www.geeks.com/products.asp?cat=CAM) shows that their cameras are all sorted into ranges of megapixels(MP).
Many people believe that markets are specific megapixel cameras because most of it, which is the most important criteria in choosing a camera. More megapixels do not necessarily equal better images are images (both in physical size and size file), much larger.
The megapixel count is obtained by multiplying the number of pixels in a horizontal line through the number of pixels in a vertical line. So if a camera can produce imagesat a maximum resolution of 1600 x 1200 pixels, is a mega (1.92 mega pixels) camera 1.92.
It is expected that the images are based on the CX7525 5.0 MP Kodax automatically better than the 4.0 MP Kodak CX7430 strictly on their megapixel count. This means that the maximum size of the CX7525 is 2560 x 1920 and maximum image size of the LS743 is 2408 x 1758th Many other features of the cameras, the quality of the images that influenceand can produce much more important to look for the typical user of the total maximum size of each image.
larger image size can not, for a user who just wants to display the images on his computer screen, or take for use on the Web, but the higher megapixel images are important for those prints of their images. In general, the higher number of pixels in an image to translate the ability to create larger prints.
Sensors - CMOS and CCD
Digital camera with a smallSensor to capture the image before transferring it to flash memory for storage. Corresponds to a negative into a camera, these sensors are available in a variety of formats, with most between 20 and 40 mm square. There are two types of sensors, which can be found in cameras: CCD (Charged Couple Device) and CMOS (Complementary Metal Oxide Semiconductor). CMOS sensors are usually found in fewer cameras and offer lower quality appears as a CCD sensor, which probablyin a more expensive camera.
There is one exception to the rule that CCD is better than CMOS, and that is with the type of digital SLR (Single Lens Reflex) cameras. They use a much larger sensor (greater than 300 square millimeters) and can provide excellent image quality, but not the quality to come up with a much higher price.
Zoom - optical and digital
Most digital cameras offer some sort of zoom, but it is important to understand what kind is provided. OpticalZoom functions, like a film camera where the lens physically moves to increase production. Digital zoom uses circuitry to enlarge a standard image size and content of crops outside the magnified area. The quality of images produced with digital zoom suffer because of the nature of the process and the optical zoom is a far more desirable properties.
The price for a camera with optical zoom, far more than with the digital zoom, but theThe image quality can not be compared. The Kodak CX7330 and CX7300 Kodak cameras are comparable in many ways, but the CX7300 features only digital zoom, while the CX7330 features both optical and digital zoom for about $ 30 more.
Memory - Digital Film
The two important things to consider when choosing flash memory for digital cameras is that the format chosen, and a selected form, the data collection faster and be ready for the next imageas soon as possible. A photographer tries to take a rapid succession of high-resolution images on the Kodak DX7440 has many options in SD (Secure Digital) memory cards to choose from, but it would be much better with something like the SanDisk Ultra II SD card, which has a minimum sustained speed Write 9 MB / s, with a generic SD card, which voted a burst rate of only 2.5 MB / s.
Aliasing
Even if you think you know the basic definition of this term, it can seem confusing in the contextdigital cameras. Aliasing refers to the appearance of jagged edges in diagonal, curved surfaces, usually seen in the images. This effect is due to the fact that all pixels are square, and that the non-quadratic forms must be created in an image with square components caused.
The solution to aliasing is not by chance called "anti-aliasing." Through software, the edges generally affected by aliasing are blended and the jagged appearance can be made easier. video GameEnthusiasts can with anti-aliasing and the effect of different levels it can have on the overall performance of the game. Although the technology is similar, making the personal significance of the best digital images possible with the application of anti-aliasing only a breeze.
Aspect ratio
The aspect ratio describes the shape of a digital image or a chart for this, the first number is the width of the image and the second number is theHeight. People may be familiar with the term applied to televisions (16:9 as televisions have become fashionable on traditional units replaced 4:03), and the same concept here.
Standard film cameras generally use an aspect ratio of 3:2, but most digital cameras have adopted a ratio of 4:3, so that images better fit on a standard computer monitor. Monitors with typical resolutions of 800x600, 1024x768, 1280x960, or, for example, all have an aspect ratio of 4:3, so thatit only makes sense for images that are well adapted to create these images. Even if the images can be manipulated to any size paper, special photo paper is available as high quality prints to enable the correct aspect ratio can be made.
Connectivity
The images were taken from a digital camera features means that some will be drawn to bring them to a computer or even directly to a printer. In general, cameras provide a cable to a computeris a serial, USB, USB 2.0, Firewire o.
Serial ports are almost extinct at this point because of its slow connection speeds and lack of support plug-and-play, but some older models or low-end may still offer serial connectivity.
USB is the most common form of connectivity, and when speed is important for you specifically look for USB 2.0 support, as up to 40 times faster.
Some specialized cameras for the protocol high-speed FireWire-awayConnecting to a computer. Virtually all modern computers with at least a couple of USB ports, but not all computers have Firewire. Firewire capabilities can be added to any computer with an available PCI slot using an expansion card like this.
Some cameras do not require any cables at all, since that transmit images to a PC wirelessly. The Concord EyeQ is like a camera, Bluetooth technology uses wires instead.
Even with all types ofThe transfer of the images in which up to now, another method can be used as a substitute for all of them universal. Many people find flash memory card reader for quick and easy alternative use of the native half of the camera connecting elements. Just remove it from the slot of the camera and pop into the slot on the reader, and then the computer system can take the card to access the memory card as a local hard disk.
Final words
Each sector has its own high-techNumber of specific keywords and digital photography is no different. Although not an exhaustive resource of digital photography terminology, this tech tip provides information to learn some key concepts to make shopping easier for a digital camera just a little '.
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