|
Understanding Digital Photography
Most serious photographers and all professionals use a Single Lens Reflex camera (SLR), the definition of an SLR camera is that the image is captured exactly as you see it in the viewfinder. However there are now two types of SLR the single lend reflex film (SLRF) and the single lens digital (SLD). They are both single lens camera, but digital does not use film and the resulting image can be processed at home with the aid of a photographic editor such as the chemical component in a traditional camera is film. When film is exposed to a real image, it makes a chemical record of the pattern of light, coming through the lens. Film has a collection of light sensitive frames, suspended on a strip of plastic. Colour film has three different layers of light sensitive material, which respond to red, green and blue (known as the (RBG) values. When the film is developed, it is exposed to chemicals, which dye the separate layers of film, into a color negative. All modern film is made up of silver halide crystals. The digital revolution is the conversion of analog information, which is represented by a gradually fluctuating wave, to digital information represented by bits. This shift in technology has revolutionized both visual and audio information, in the form of cameras, televisions, and MP3 players. Whilst SLR cameras relied on a chemical process to transmit an image onto film, all digital cameras have their own inbuilt computers, which records images electronically. Essentially the digital camera represents a form the computer can understand, the information is collected in bits and bytes. Each part of the image is broken down into "pixels", which is a contraction of picture element. When monitors display colors they are arranged in rows and columns, separated into thousands of little squares of color. They are so minute that they appear to be connected, but if you zoom into this the squares are quite separate. All these squares are the smallest dot that can be displayed by a monitor, and combined together they display the completed image. Because of the enormous difference in the way the two types of camera work, there has been in many people's mind a huge confusion as to what type of camera to buy. Added to that, there are three types of SLRD cameras. SLR cameras had conventional shapes, because it was necessary to have room for the film, and the light path, SLRD cameras do not have these constraints. At the lower end of the market for the digital cameras are the "Point And Shoot", there SLRF equivalent is known as "idiot Proof". They have low resolutions of between 3,000.000 and 4,000,000 million pixels. The next level is the proconsumer camera typically with a resolution of 4-5 million pixels. At the top end of the market the resolution is between 6-12 million pixels. The greater the number of pixel resolution the better the quality of the resultant image. As with any new technology there are pros and cons with both types of cameras, and it will be decades before digital cameras replace SLR, if indeed they ever do, more likely the SLR cameras will be retained for use in a specialist market. It is also fair to say that the quality of digital cameras has improved enormously in the last ten years, and the price has also reduced dramatically. One major factor determining the choice of camera is weight. Typically the SLTD camera is half the weight of it's SLR counterpart. The point and shoot is fully automatic, bit like their counterpart the idiot proof they do not give the photographer much creative control. They have earned their stripes, on the occasions when a photographic opportunity would have been missed with SLR. The middle of the range family of digital cameras represent the fastest growing demand for new cameras as they represent the ease of digital with a higher level of creative control. You can also make larger prints, as well as use the function of through the lens focusing. The higher resolution top of the range digital cameras offer the same wider exposure controls and the ability to use different lens, in other words they offer the best of the features of analog photography to digital photography. The most recent development in digital cameras has been the development of a standard image sensor in the ratio of 4:3. As the image sensor has a standard size and shape, the mount for the lenses can be identical. That means that they will fit more than one type of camera, and will ultimately be cheaper to produce, as they can be produced in higher volume. Canon lenses for SLR film only fit Canon cameras, but they will now disappear. In future to add to the growing confusion, there will be a plethora of lenses from multiple manufacturers, to fit your camera, competition between the lens manufacturers should mean cheaper and better quality lenses. One factor not to be forgotten in deciding whether or not to go digital, is that the quality of the lens is still of paramount importance, it is still better to have a cheaper body and higher grade lens. Another major factor is that digital image sensors are smaller than frames of film, which means that the lens can be correspondingly smaller and lighter. Until the development of the 4:3 ratio systems, digital cameras used conventional lenses. The type of digital camera to choose is as complex as buying a car, it is a matter of personal choice, dictated by what it is used for, and the available amount of money to spend. Fortunately there is a large amount of help in this respect already available on the Internet for you to research. At imaging resources you will find a large database dealing with individual camera models, the reviews also cover the scanners and printers as well. It includes member's forums to assess individual comments as opposed to manufacturer's claims. To review the cameras by make and price there are Canon, Fuji, Kodak, Minolta, Nikon, Olympus and Sony. One of the major drawbacks of using digital film, was that the quality of prints produced on a personal computer's printer was less than satisfactory. This obstacle has been overcome by the development of online printing centers. You upload the film to them via e-mail and they print the images and they are returned by post, with a professional standard. Kodak gallery offers you the opportunity to have your images improved and printed, and then to share your album via your computer, which means that your personal scanner is not necessary. http://www.luminous-landscape.com/tutorials/colour_theory.shtml excellent article on colour to improve the final color of images Publisher & author: Roy Barker. Roy is the author of the popular ebook, Income from Photography - a downloadable ebook which guides the reader on how to start up and market a Profitable Photography business. It can be viewed at http://www.profitable-photography.com. Other related and reviewed services & research sources can be found at http://www.profitable-photography.com/html/117/ The information on this and adjoining pages may be reprinted and used on other sites providing all information remains unchanged and the article and all pages remain as they are found here in its current font size & image with all links in tact.
|
RELATED ARTICLES
9 Tips For Taking Great Digital Photos Introduction The Paradigm: Going Digital As you might imagine the paradigm shift from traditional film-based photography to digital is rapidly creating new opportunities to learn and grow. The photography industry is moving at an incessant pace, and digital cameras sales have surpassed their film-based cousin at an alarming rate each year. On January 16, 2004, Eastman Kodak announced it would end its sales of film cameras in the United States and on June 15, 2005, Kodak announced it will discontinue production of black-and-white photographic paper by the end of the year as it continues its transition to digital photography. Soon digital cameras will hit critical mass and film will only represent a minute segment of the industry. How to Buy a Digital Camera Are you buying your first digital camera? Well, you must be confused by the bewildering range of models out there. How do you know which model will suit your needs? To make things worse, digital cameras do not come cheap. Choosing a bad camera will easily cost you a few hundred dollars. Digital Camera Reviews and Ratings De-Mystify the Choices Shopping for a new digital camera can be quite frustrating with the hundreds of choices available. Digital camera reviews clarify this confusion by comparing camera features and options, then rating how each camera compares with similar models. Picture Framing for Photographers - Part 1 Imagine being able to frame all your own photographs just as well as a professional. You can save enough money to easily pay for all the necessary tools, and the convenience of being able to do it yourself frees you from having to get someone else do it. If you're an amateur a mount cutter, a frame clamp and a hand-operated frame joining tool is all the equipment you need to make professional looking frames. These days the tools are easy and safe to operate, inexpensive, and give you a good result. Picture framing can be divided into four areas. Cutting the bevel mount, cutting and joining the frame, mounting the photograph, and fitting and finishing the job. The tools required to perform each one of these functions are as follows. Digital Photography: The RAW vs JPG Debate If you use a digital camera (I use a Canon EOS Digital Rebel/300D myself) and that camera is an SLR, then it most likely can record images in RAW format. In general, you should record your images at the highest resolution possible. If you only have a small memory card and are worried that you can only record a few RAW images on it, then it's time to buy a bigger card! [They don't cost much these days]. You can always shrink an image after it's taken but you can't enlarge a small one without introducing artifacts. At the very least, you should have your camera record images in Hires JPG format but RAW format is even better. A New Way to Use Old Snapshots If you're like me, you have hundreds of photographs sitting in envelopes. Pictures from birthday parties, weddings, family gatherings, anniversaries, the Fourth of July, Thanksgiving and Christmas. You have already put the best snapshots into albums and these are leftovers. You don't want to throw them away, but you also don't know what to do with them. Photography Business: Taking Baby Photos - for Professionals & Families Babies make the best and the worst subjects to photograph. They are the best for two reasons, people are more tolerant at looking at baby photos, as well as the fact that babies are not aware their image is being captured, and therefore they do not tend to put on the "camera face" so typically used by elder children and adults. They are the worst subjects because their behaviour is unpredictable. Because their behaviour is uncensored, they show their emotions, and can just as easily cry as gurgle happily into the camera. Photography 101 Part 3 Content Entering the World of Digital Video Cameras Gone are the days when you would need to employ a professional to take a video for your business projects. Whether you need it to provide training to your employees or students, you can do it yourself with the help of a digital video camera. In fact, with the advent of the Internet, and e-learning becoming so popular nowadays, a digital video camera has become essential equipment for all organizations, especially training or educational institutes. How to Shoot Video of Your Kids Sports Team So That Anyone Else Will Watch It! Break out that video camera, there is a game this weekend! 1. You bought a video camera 2. You want to shoot sports of your kid 3. Here is how to do it right! Tame Those Memories Family vacations, summer weddings and family reunions are in full swing, and the warm memories and envelopes of photographs are ever growing! You certainly intend to organize them -- but the boxes in the attic are full of intentions, and now the photograph CDs are being to pile up! What can you do to stop the madness? Digital Film Processing is Really the Only Option for Truly Quality Prints Digital photography has taken off like wildfire these days, primarily due to its ease and quality in its digital film processing. With a good digital camera, it's as though you're using the very best Kodak film for every single one of your digital photos. Moreover, digital film processing can be done from the comfort of your own home with the right digital film processing software or with digital photo developing online. Creating Printable Photo Greeting Cards STAY CONNECTED WITH FAMILY AND FRIENDS. Use A Tripod! Using a tripod is essential when taking photos - and not just for night shots. To get ultra crisp and sharp pictures, your camera cannot move at all when the shutter is open. In some circumstances, even the tiny movements your hand makes are enough to make a slightly blurry image. The best way to ensure your camera does not move is to use a tripod or other camera stand. Fuji Digital Cameras Fuji digital cameras entered the market in the late 90's. Started in Japan in 1934, Fuji has always tried to stay ahead of the pack. The history of this company is rather interesting so let us take a look at it. The Well-Dressed Photographer - Winter Some of the best images can be captured during the winter months, so don't let the cold stop you. For the best photography experience, wear clothing that will keep you comfortable and safe. Hyperfocal Focusing: What Is It And Why Should You Use It? When should you use hyperfocal focusing? Well, sometimes when shooting a landscape, you want everything sharp from the front to the back of the scene. Setting a small aperture such as f/16, f/22 or even f/32 can help, but if you really want to maximize depth of field, hyperfocal focusing is the technique you need to use. Canon-Powershot-A80 Review Last month we bought the Canon Powershot A80 online for about $325 including shipping after looking at digital cameras for about a month. It had all the features we were looking for in our price range and the stylish gleaming metal case didn't hurt either. We looked at a few other cameras, notably the Fujifilm FinePix S7000, but settled on the Powershot and we are glad that we did. Choosing The Right Digital Camera Let's get something straight right out of the box. If you're looking to buy a new digital camera, you don't really have to be an expert in pixels and mega pixels and all that kind of stuff. If you expect to find that kind of deep technical discussion here, you're in the wrong place. |
|
Copyright © 2006 Advancing Women/font> |