A digital camera captures images in a digital format, unlike a conventional camera, which captures images using a photographic film.
History:
Using a mosaic photosensor, Eugene F. Lally of the Jet Propulsion Laboratory first showed how still photos could be produced in a digital domain. An engineer at Eastman Kodak, Steve Sasson, used solid-state CCD chips to build a prototype digital camera having a resolution of 0.01 megapixel, and recorded black and white digital images to a magnetic cassette tape. With this prototype model, Steve took the first image in December of 1975 taking 23 seconds to capture it.
In 1988, Fuji DS-1P became the first digital camera that captured images as a computerized file. However, the camera never entered the U.S. market. In 1991, Kodak DCS-100 was the first commercially available digital camera, which used a 1.3 megapixel sensor. With the advancement of technology, modern digital cameras have become multifunctional and are now capable of capturing audio/video and still photographs.
Benefits:
1 – You get superior image quality. Digital cameras can offer good to excellent image resolution.
2 – You get a fair price. A digital camera is reasonably priced and is affordable.
3 – You can transfer the pictures to your laptop. You can easily connect the digital camera to your laptop and transfer the pictures in your hard disk.
4 – You can print in large sizes. Due to its high resolution, pictures can be printed in large sizes by any plotter.
5 – You can email the pictures to your friends. You can send the pictures by email to your loved ones.
6 – You can store the images in CDs or hard disk. Once the pictures are transferred from digital camera to the computer, permanent storage on a CD or hard disk is possible.
7 – You can take the camera in your pocket while you travel. The small size of the digital camera makes traveling with it easy and a pleasure.
8 – You can move in close to your subject. Zoom lenses offer close-ups of your subject with sharp focus. You can take very good close-ups of flowers, bugs, stamps, coins, etc.
9 – You can rework the image in a computer. Any photo editing software can rework the images taken.
10 – You can take good pictures even in low-light situations. Due to flexible over sensitivity or ISO equivalents, digital cameras can easily take detailed pictures even in low-light conditions.
11 – You can take quality still photos of moving objects. Sports and fashion photography can be easily accomplished due to the fast burst rate of digital cameras.
12 – You save money. There is no need of buying photographic films, developing them into negatives and positives. Moreover, the batteries are usually rechargeable lithium-ion batteries, which last a long time.
13 – You can choose as per your needs and fancy. Many models are available like standard digital camera, underwater digital camera, waterproof digital camera, compact digital camera, and the professional digital camera.
Storage Media:
Digital cameras use memory to capture and store images. Some of the storages media used are onboard flash memory, 3.5″ floppy disks, video floppy disk, PCMCIA hard drives, CD or DVD, CompactFlash memory cards, Microdrives, Memory Stick, SD/MMC, MiniSD Card, MicroSD Card, XD-Picture Card, SmartMedia, and FP Memory.
Power:
Digital cameras consume a lot of power, which is supplied by powerful, small in size batteries. Batteries are broadly divided into two groups, namely, off-the-shelf and proprietary. Off-the-shelf batteries are like AA, CR2, CR-V3, AAA, and RCR-V3. They are lithium-ion (Li-Ion) or Nickel metal hydride (NiMH) batteries. Standard AA non-rechargeable alkaline batteries either do not work or work for only a very short time in most cameras.
Proprietary batteries are built as per the manufacturer`s custom specifications and are usually available as aftermarket replacement parts. Generally, lithium ion batteries are widely used as proprietary batteries for digital cameras. This article can also be accessed in portuguese language from the News Article section of page www.polomercantil.com.br/camera-digital.php
Roberto Sedycias works as IT consultant for www.PoloMercantil.com.br whitesmoke software

The development in science and technology in recent years has not just been about developing of devices that make life easier, it has also been a lot about making life more luxurious. One such great development has been the concept of digital camera.

Digital cameras are nothing but cameras that allow you to take pictures digitally instead of having to use cameras that take and store pictures on photographic films. They are easy to use, and are generally multifunctional, providing various facilities. Digital cameras are known for taking good images, which are as good as the pictures taken by the conventional cameras, if not better.

In fact, digital cameras allow one not only to click great pictures; they also allow one to view the pictures as and when taken. Therefore, if you take a picture, and are not satisfied with the way it looks, and if you still have the opportunity of capturing that special moment, you can go on clicking your camera, till you get exactly what you desire.

Digital cameras also allow the option of using a flash light as and when required, to obtain a much clear image. In many digital cameras, there is also an option for taking automatic pictures. This is especially meant for those special moments, when everybody wishes to get included in the picture, without being left out, staying behind the lens.

Digital cameras also allow the user to shoot as well as save videos. Generally the sound and the picture quality is good, though it mostly varies from camera to camera. The flash light can be used while video shooting too and the fact that these are so portable and handy, they allow you to carry them anywhere for any length of time with great ease. Options can be set for automatic video shooting to, in case nobody is willing to stand behind the lens.

There are digital cameras that also allow you to change the style and color of the pictures you may be taking. For instance, you may set an option to take only black and white pictures, or pictures with a bluish or reddish hue. Some digital cameras also come with special lens that can focus and take pictures of a much wider area. Sometime you also might be able to take your own pictures as well as videos, staying behind the lens by adjusting them, if your digital camera gives you that option.

However, one of the greatest benefits of using a digital camera is probably the fact that it allows you to click a large number of pictures without having to worry too much about the memory space. The pictures may be saved in CDs, which means that no matter how long your vacation maybe and how many pictures you end up taking, you do not run out of space trying to save those sweet memories. This not only makes digital cameras more convenient to use, but it also makes it very cheap as compared to the traditional cameras.

However, the special features provided by the digital cameras vary from one camera to another, depending on the producing company, and of course on the price range of the camera. With the rapid development in digital cameras taking pace every now and then, and the prices coming down heavily, with each new discovery, digital cameras are fast becoming one of the most popular electronic goods of the modern world.

Suddenly possessing a digital camera has become a necessity in this fast changing world. Whether one loves photography or not, possessing a personal digital camera is surely one luxury many of us crave for!

This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author’s name and all the URLs (links) mentioned in the article and biography must be kept. This article can also be accessed in portuguese language from the Article section of page www.polomercantil.com.br/camera-digital.php
Roberto Sedycias works as IT consultant for www.PoloMercantil.com.br Wordpress Autoblogging Software

The future of photography is in your hands, and it’s becoming all digital! Now you can compose and view the exact picture you’re going to take, using your camera’s full liquid crystal display (LCD) screen. Review the picture an instant after pressing the shutter. If your computer is nearby, you can upload it seconds later, view a super-large version on your display, crop, enhance, and then make your own sparkling full-color print — all within minutes! When you go digital, you never need to buy film or wait while your photos are processed in a lab. You decide which images to print and how large to make them. You can display your digital photographic work framed on your wall or displayed proudly over your fireplace. You can make wallet-size photos, send copies to friends in e-mail, or create an online gallery that can be viewed by relatives and colleagues over the Web. Digital photography gives you the power to take pictures on a whim, or to create careful professional quality work that others might be willing to pay for. The choices are all yours, and digital photography puts all the power in your hands. All you need is a little information on how to choose and use your tools, and how to put them to work. The most exciting thing is how rapidly the technology is changing to bring you new capabilities and features that you can use to improve your pictures. Taking pictures with a digital camera: Some differences in technique are required, as the digital image data is captured in a manner that is different from a film camera.  Most digital cameras have a shutter that will make settings of focus and contrast when the shutter button is half-way down, and this process may add a delay to the time before the shutter operates. When looking through a viewer, it is desirable to have a digital screen in the eyepiece viewer.  One reason this is important is to ensure that certain types of scenes will retain the color elements correctly.  U should be aware that many digital cameras can do poorly with scenes such as sunrises if they point the camera at the foreground slightly below the horizon and in line with the sun before pressing the shutter.  This may result in an image that shows none of the color or brightness of the sky.  However, if you use the shutter button to pre-focus (and pre-contrast) on the sky, and hold the shutter button half-way down as your re-direct the camera toward the preferred framing direction, you will see if the colorful features in the sky will be retained in the picture. Generally speaking, a digital camera will use a shutter speed that is faster than a film camera, which relieves the user from having to steady the digital camera as much to avoid blurred pictures.  Also, many digital cameras have an auto exposure feature that tends to make a setting of fast shutter and fast f-stop.  Thus, an amateur photographer can do a respectable job with telephoto photography, where the narrow-angle view may be the only manual adjustment needed for point-and-shoot pictures. Read the instruction manual for the camera to set up this feature.  It may require that you press the shutter button halfway and hold it for a second or longer for this feature to become operational prior to operating the shutter. Some of the better digital cameras do can an excellent job of taking close-ups, as their focus range may include four inches to infinity. With the digital viewer on the back of the camera, you can have some assurance that a satisfactory photo has been obtained.  However, it has limited resolution and limited ability to show a good display in sunlight.  You can delete images from the flash card that you don’t want and free up memory for additional frames to be shot on the same flash card. For most purposes, u will be satisfied with images in the JPG format.  With a 2 Mpixel camera, each frame will require about 0.5 MB of file space.  Thus a 32 MB flash card will serve to retain up to 64 image frames. Why still use your old “film” camera when you can go Digital? For more information Click Here Naturalmed South Africa JD Taylorrhinestones

Apart from many features that are to be compared while purchasing a digital camera, the image quality is one of the most significant features that should be considered.
Over the last two decades digital camera has been one of the most coveted gadgets for the techno-savvy individuals. With the declining prices of various digital camera models, the gadget is now not beyond the reach of common man. But, still there are various confusions associated with purchasing a digital camera. Although you can find numerous articles on comparing the prices and features of the digital cameras that are helpful for the novice users of the gadgets, there are very few tips available for the experienced users who want to update with the recent technologies of the camera.
Apart from the features, size and weight of the device, the image quality is another aspect that influences the decision of the buyers. Some of the major aspects of the image quality are discussed below.
Image quality on the a digital camera LCD:
The most practical reason why people are opting for a digital camera is the image quality. However, all digital cameras are not able to produce the equal image quality. Hence, while purchasing the gadget you must remember that image quality differ for all brands of cameras. The LCD monitors of the cameras are not the yardstick to judge the picture as the contrast and color on the LCD are rarely accurate. The real assessment of the image can be done when the pictures are transferred to a computer. For that you can take a memory card to the store and collect some images with the camera that you want to won and see them on your computer screen.
You can also visit the sites that offer reviews on the digital camera models where they post full-resolution image from the unit. While evaluating an image think about the final output of the image.
Color in the picture:
Color is the most prominent part of image quality and it plays a crucial role in the image. Hence, it is the best idea to know about whether the digital camera has any color tendency. Color casts, bad white balance, chromatic aberration, inaccurate colors are some of the color issues with digital cameras. Problems like chromatic aberration are not visible in the print and not difficult to remove but removing a bad white balance is bit difficult. Most digital cameras come with automatic or manual bad white balance. So, while evaluating the image quality give a special attention to the color reproduction.
Exposure to difficult lighting:
While analyzing the image quality, one of the most important you need to judge is the performance of the digital camera in difficult lighting situations. Look at the images taken in low light, with flash and in mixed lighting with lots of dark and bright in the scene. These days, the cameras are available with good light meters. If you are a skilled photographer you can adjust your images in the adverse lighting situations.
Sharpness of the image:
The sharpness of the picture depends on several factors such as camera resolutions, camera lens and the built-in sharpening routines of the camera. However, assessing the detail in an image is a tricky thing. Unless you compare the images of the same scene taken with different cameras you can’t compare the sharpness of the images. It is the sharpness that greatly affects the quality of the images and you should pick the digital camera that produces images with different degrees of sharpening.
Basically, you find satisfactory result from digital cameras when the image quality is considered. Still some cameras can produce better images in terms of sharpness and in difficult lighting conditions. But it can’t be denied that the image quality is also dependent on the quality of the cameras. While comparing the digital camera images make sure that you compare the cameras that are comparable with their features and prices. WP Robot Wordpress Autoposter

An underwater digital camera is not just used to capture underwater memories; some professional marine photographers also use underwater digital cameras in their business. Even marine biologists and scientists use underwater digital cameras to capture marine life and thus be able to study the life and properties of the marine life. But I think it is safe to assume that you, my reader, are neither a marine scientist nor a professional photographer. Like me, you are just some photo junkie who wants to capture underwater moments and just cant figure out how without ruining your cameras. Please listen to me when I say that even waterproof cameras cannot withstand underwater photography. To be waterproof is to resist the water in certain levels, submerging in under the water to get the perfect shot is like throwing it out of the window expecting a pick-up truck to pass by and run over it. Now if you’re really serious about using an underwater digital camera to capture those wacky and funny moments underwater, I suggest that you buy specialty cameras. There are rarely underwater digital cameras, as cameras are electronic and cannot withstand water and water pressure. The closest electronics has ever got to producing underwater digital cameras are producing underwater casings for digital cameras. These casing will turn your conventional digital camera into an underwater digital camera. If you are shooting with your underwater digital camera, you need to take note of a few things to help you come up with the best images underwater. Remember that as you farther under water, light diffuses. This means that your underwater digital camera will produce images darker than those images you took while on land – this is because of the light diffusion the red spectrum seems darker. To avoid this, use white balance come up with natural colors. Also, pictures taken underwater will come up larger than pictures taken on land with the same zoom effect. Be sure to check your underwater digital camera’s viewfinder to check the right picture angle and size that you want. An underwater digital camera with its built-in flash will produce marine show phenomenon. It is a phenomenon wherein your pictures come out as blurry and with white particles floating above it, to avoid this phenomenon it is advisable to use external flash for your underwater digital camera. Before using your underwater digital camera, submerge the camera in the water first for several seconds then check if there are leaks through the case. Make sure that no grain of sand or piece of hair is stuck in between the seal to make sure that water will not permeate the case and thus wet your camera in the process. It is also advisable to put silica gel or two inside the case of your underwater digital camera as long as they don’t disturb the camera’s operation. (Silica gel will keep the moisture from forming inside your camera case.) Most underwater digital cameras come with optional lenses. Don’t be afraid to add these lenses to your underwater digital camera kit. Macro lenses will help you capture small things without getting too close and startling your subject. Also, remember to always wash of salt when you’ve used it under salt water. If the salts are not washed off, in time they will crystallize; act as sands and cause leaks for your camera case. In cases when sands seem to get into the case, they are better washed off with streams of water. Check out Sony, Nikon and Canon’s website for available underwater cases for your digital cameras. http://www.rankland.com/default.asp   We are a local and regional search friendly classified.haba

There are millions of people around the world who share a keen interest in photography. The charm of capturing a moment in a camera is truly amazing. Probably, this is one of the strongest reasons why a growing number of people are joining the cult of professional photographic pursuit. Traditionally, taking photographs, film processing and developing them in the dark room was a painfully long process. But as digital technology evolved, it enabled camera manufacturing companies to come up with high-end digital cameras.
Digital cameras are an ideal gadget for taking pictures without having to worry about running out of snaps of roll which is the case with the traditional film cameras. This apart, there is no need of having to wait till the entire roll of film gets used just to find the blown-up pictures in the dark room. Digital cameras allow you to take any number of photographs and see each one of them right after you take them. Also you can connect your camera to the USB port of you Personal Computer and store your snaps there in a folder. What is more is that you can customize each photograph, thru software, just the way like it. In case, you want to take a hard-copy of the pictures, you can always use the printer to get your favorite photograph printed out.
Buying a digital camera is a matter of serious deliberation. Since different brands of companies are offering cameras with special features, you have be aware of the standard features of the digital cameras in order to be able to make the right purchase. The following are some of the must-know tips that you should be familiar with before you swipe you credit card in a digital camera kiosk of a shopping mall or punch in the CVV number in the box while shopping online for a captivating camera.
Price Range:
The price of digital photographic cameras can usually range anything from US$100 to $1000. If you are buying a digital compact camera for the first time, then don`t go for an expensive one. It is quite easy to get tempted into spending a lot of money to buy a digital SLR camera offering features that are just of no use to you. Get to know your needs and settle for a prudent purchase. Ensure that the digital camera you pick should be light-weighted and easy-to-use. Later on, after you learn the basics of digital camera photograph, you may opt for an high-end edition.
Features:
The standard features of digital cameras of all make are almost similar except for some special features introduced by some renowned brands in the market. Features such as zoom, automatic functions, special effects, black & white images and video recording facilities are usually offered by most brands. However, as a prudent buyer you have be careful of the claims some manufactures might be making. For instance, the feature of digital zoom magnifications may not actually live up to your expectation level if you are hoping to get the optimal clarity especially if you are aiming at say 8×10 or larger size photos. Do not be tempted by the flashy promotional gimmickry of the brands. Consider the features keeping your pre-established price range in mind.
Lens:
All digital cameras provide two types of zoom features: optical and digital. While the optical zoom feature is based on the lens magnification and gives you images with a sharp and crystal-clear clarity, digital zoom relies on the magnification of the digital image which results in less sharp and fuzzy images. Make sure that the digital camera you buy should at least have the optical zoom features. However, as mentioned earlier, you have to be careful of the digital zoom magnification claim. You can look for digital cameras having lens auto focus and image stabilization features.
Image Resolution:
Image Resolution or Pixel Resolution is one of the most striking features of digital cameras. For personal and email purpose digital cameras having 2.0 mega pixels will deliver clear photos. However, many manufactures are now offering digital cameras with 8.0 and above mega pixels. You get better and clearer images with higher mega pixels. High mega pixel resolution plays a key role in image enlargement. So if size matters to you, consider this aspect seriously.
Battery Type and Longevity:
If you are likely to use the digital camera for outdoor activities, it is important to consider how long the built-in batteries will last. Even if you think of using some extra rechargeable batteries, just make sure whether the digital camera you are buying support the same batteries.
LCD Screen:
Every digital camera has the LCD Screen feature. Just make sure that the screen size should be at least 2 inches or above. It will give you better and clear images. This article can also be accessed in portuguese language from the Article section of page www.polomercantil.com.br/camera-digital.php
Roberto Sedycias works for www.PoloMercantil.com.brBest Smartphone Software

A digital camera is an electronic gadget that can capture photographs and then store them. Instead of employing photographic films like the traditional cameras or using magnetic tapes to record images in an analog format like in video cameras, a digital camera stores photographs in an electronic way in a digital format. Nowadays we also get modern and multifunctional compact digital cameras that can record and store sound and video apart from pictures.

Digital cameras have become a rage everywhere in the world. They are amongst the top items of must-have lists of every home. Not only much more technically advanced with better features than their older versions, digital cameras are also very handy and practical. They come in a wide range and variety to suit everyone`s tastes and budget.

Apart from having a better picture quality, the most obvious advantage of digital cameras over the conventional ones is that you can click and store as many pictures as you want without worrying about wasting the film roll. After you have transferred the pictures to your computer, you can easily keep those you want, discard others, print some and may even edit the not so flattering ones. This clearly gives you a lot of options and choices as you can change the background of photograph edit brightness and contrast and make other changes according to your whims.

Digital cameras can be of various types. The first in the category is the video camera which is mainly used to record moving images. Then you have digital still camera or live preview cameras. These cameras are usually of two types, compact and bridge. Compact digital camera has small zooms and is characterized by easy focusing and easy operation. They usually have a built in flash. Bridge digital cameras have super zoom lenses and are capable of taking good images.

Then we have digital single lens reflex cameras with a mirror and reflex system, digital rangefinders which is nothing but a camera that has a rangefinder and the professional modular digital camera system that is a very professional camera with different modular parts like grips, winders etc to suit different purposes. These types of cameras are usually used for commercial purposes in studios as they are quite big and bulky.

With a wide variety of digital cameras available in the market, it is obvious to get confused as to which will be the best-buy amongst them. However you need to understand that each camera has its unique function and specialty and you need to check out each one to determine your pick. As for example, if your purchased camera is going to be a gift then you need to know which type of digital camera will be suitable for the person. For instance, teens will obviously like cameras that are funky and cool, while mums will be delighted to get cameras that will allow easy image sharing for family pictures.

Before buying a digital camera it is important that you get your basic information right so that you can get the best deal. There are lots of factors that you need to consider like the resolution of the photograph and the size of camera. Another important consideration is the Digital Camera Storage or Memory Cards. Semi-professional photographers would also like to consider having a decent Digital Camera Zoom.

Last but not the least, after you get your brand new digital camera then learn about the basics of its maintenance and operation. Get acquainted with its various features; learn how to share your images with friends and family and steps to take to troubleshoot your camera.

This article is under GNU FDL license and can be distributed without any previous authorization from the author. However the author’s name and all the URLs (links) mentioned in the article and biography must be kept. This article can also be accessed in portuguese language from the Article section of page www.polomercantil.com.br/camera-digital.php
Roberto Sedycias works as IT consultant for www.PoloMercantil.com.br Wordpress Autoblogging Software

Life is a stream that lets memories flow away as we leaving them behind. Although, it`s difficult to find time to look back and reminisce your past memories in this fast-paced world, sometimes we feel really special to muse over the pleasant moments of those bygone days that take us into a sweet nostalgia. Hence, people make it a point to capture their special moments with the help of digital cameras no matter how big or small the occasions are.
Digital cameras have become so popular in the last couple of years that many cell phone manufactures have started offering mobile phones with a built-in camera. Although, cell phone cameras let people capture photograph as and when they like, their use, however, is limited to certain occasions. This is because mobile phone cameras are unable to offer the clarity and precision that standard digital cameras can offer. This brings the necessity of buying a digital camera among many people who are passionate about photography.
But, here is the deal – if you are one of those first-time buyers of a digital camera, you are likely to face some or other problems while buying which is going to hurt your decision. Remember the following points before you go and buy a digital camera for the first time.
Determine your needs:
Before you decide to buy a digital camera, determine your specific needs. Do you need a digital camera just for fun such as capturing pictures and sharing them with your family and relatives via email, or do you want to learn the nuances of professional photography? Knowing your specific requirements will help you in buying the right digital camera and saving money as well.
What`s your budget:
Digital cameras are available with price range starting from 100$ to 1000$. However, you should set a particular budget before buying the gadget. Actually, what you want to do with the digital camera decides the money that you are required to spend on it. For instance, if you want to buy a digital camera for professional photography, you may have to spend a few hundreds extra than if you want to buy a standard digital camera used for amateur and fun photography. If you are buying a digital camera for fun, it should cost you between 300$ and 400$ with all the standard features.
The mystery called megapixel:
Megapixel is critical to the clarity of a picture when you take pictures with the help of a digital camera. Hence, higher the megapixel of a digital camera, clearer the pictures that you will be able to get with it. What should be the megapixel of your digital camera? If you are going to use your digital camera to take and share pictures with your friends, family and relatives for fun, a 2-mega pixel should be ideal for you. If you are looking at taking pictures of professional quality and bigger size, buy a digital camera that should be have at least 4-5 megapixel.
Zero in on the optical zoom:
If you are not familiar with the lingo of digital camera, you are most likely to confuse between digital zoom and optical zoom. Many manufactures will try to sell their digital cameras on the basis of digital zoom. However, you should know that digital zoom gives you larger image compromising the quality. Go with the optical zoom as you can get enlarged pictures with good quality.
Compatibility factors:
When you buy a digital camera, make sure you figure out if it is compatible with your personal computer. This is because you are going to use it along with your computer. Usually, specifications and minimum requirements are mentioned in the digital camera manual. Ask the sales person to explain them to you if you are not able to understand them properly enough. This article can be accessed in portuguese from the Article section of page www.polomercantil.com.br/camera-digital.php
Roberto Sedycias works as IT consultant for www.PoloMercantil.com.brcolon cleanse weight loss