ComputerHunter.org |
|
|
|||
|
 |
How To Avoid Or Reduce Red-Eye
Photography with the aid of a digital camera is beyond doubt very fascinating. However, it also has many a nooks that the users of the digital camera must be aware of and also must be well educated to deal with in order to produce good photographs worth the most prized digital camera. Such a concept is that of the red eye! In order to understand what this red eye actually is, a little detailed introspection is necessary. Basically speaking red-eye is a function of at least three things, they are firstly, ambient level of light because stumpy light level causes the retina of the person to be photographed to open wider to admit more light thereby divulging open the iris, which is the primary part that reflects the red light hence giving the appearance of red eyes for the subjects. Also secondly the younger the person being photographed the wider remains the retina and hence the greater the effect of red eye in the picture. Thirdly, the reflection angle of the flash plays a vital role, as the light is recoiled back to the digital camera and the closer the incident light beam is to this reflected light beam, the greater becomes the red eye effect. To prevent this instruments such as flash brackets are useful to make the flash a bit removed from the propinquity of the lens. Thus the red eye effect is somewhat revealed till this part of this discussion. Now is the time to look into a greater detail in order to analyze the various aspects of the red eye effect and also find out ways of reducing the problem as far as possible. It can be noted here that the only important thing is that the users must ensure that the proper fixing of the angle between the flash beam and the lens axis. The general rule here is that the photographer must keep the angle wide enough that the light beam from the flash does not reflect off the retina of the person being photographed and comes right back into the digital camera lens. A good idea is to make the red-eye reduction work by making the flash shine a light into the eyes of the person being photographed just before the flash is incident and the shutter is pressed. This causes the irises in the eyes of the person being photographed to narrow down or shrink. As a result of this the eye develops a smaller opening for the eye view of the digital camera and does not show off the blood filled retina. This light is called pre light! And very importantly this process works only if the person to be photographed is in point of fact looking directly at the flash for the pre-light to come. Other factors influencing the red eye are the level of ambient light during the time when the photograph is being taken and how near the flash light is to the lens. The rule of thumb comes out that the brighter the ambient light; the lesser is the effect of red eyes, everything else being one and the same. As the flashlight goes farther from the lens, the fewer becomes the effect of red eyes, everything else being one and the same again. Thus the key idea is that red eye is not caused if the ambient light is comparatively high. And it does have a significant effect if the shooting area is dark. Many digital cameras have built in features for anti red eye that is used to reduce red eye when taking a picture of a person looking straight at the camera also. But manually, the best red eye reduction can be obtained with the help of an external flash as described. The above discussion has dealt with the most important ideas regarding the red eye effect. The discussion has analyzed the inherent facts about the digital camera red eye effect, their causes as well as remedies. The only thing that remains is that the users must implement these ideas while shooting under circumstances discussed here so that the red eye effect cannot harm the beauties of art created with the aid of the fantastic device, the digital camera! About The Author Jakob Jelling is the founder of http://www.snapjunky.com. Visit his digital camera guide and learn how to take better pictures with your digicam.
Google News - Top Stories
|
|
|
|
RELATED ARTICLES
Online Photo Sharing: Not Just for Family and Vacation Photos You may have joined the photo-sharing craze to share your family vacation photos, but have you thought about other uses for photo sharing? Better Photos with Your Digital Camera Everyone has a digital camera today and we all take a lot of photos. But if your photos still have trees coming out of your father's head, mom has red eye, and your beloved pet is never facing the camera then here are some tips to help you take better photos. Removing a Textured Pattern from a Scanned Photo ? 5 Minute Digital Fix One of the most common problems when dealing with scanned photographs as part of a digital restoration activity is that after scanning, the digital image appears to have a textured pattern to it. Megapixel Cameras: How Many Megapixels Do You Need? Knowing which megapixel camera to buy can be intimidating. There are literally hundreds of models of digital cameras out on the market today. How can you know how many megapixels you'll need? Magic and the Photograph It was widely reported in the press (15 September 1997) that a British tourist, who stole a lump of stone from the base of the Great Pyramid five years earlier, returned it to the Cairo Museum with a letter saying that 'it had brought him bad luck ever since'. The Museum authorities were not surprised; several such items had been returned by people who felt cursed {When the Luxor Casino was built in Las Vegas it moved on its foundation so the elevators had a lot of re-engineering to be done, while I lived in Las Vegas. The death toll during its construction was nine. Do you think a religious and spiritual force knows when it is being improperly sullied?} after stealing them. A good reason for caution is the largely bogus story of an Egyptian coffin lid - or fragment of a coffin lid. It was told to Arthur Weigall, author of 'Tutankhamen' (1923) by its one-time owner, Mr. Douglas Murray who purchased the coffin some time in the 1860s: 'no sooner had he done so than he lost his arm, owing to the explosion of his gun. The ship in which the coffin was sent home was wrecked, and so was the cab in which it was driven from the docks; the house in which it was deposited was burnt down; and the photographer who made a picture of it shot himself. A lady who had some connection with it suffered great family losses, and was wrecked at sea shortly afterwards...The list of accidents and misfortunes charged to the spirit which is connected with this coffin is now of enormous length. What Should You Look for in a New Camera? These parameters are discussed at 2 levels: -Based on degree of functional use of available features -Based on the type of photography you want to attempt -->Based on degree of functional use of available features A person who is happy with his or her camera model usually responds with the following words of praise. 'Incredible ease of use' 'User-friendly controls' 'Intelligently and thoughtfully designed' 'Excellent value for money' 'Light and compact' These are the kind of terms that you will come across from camera owners who are satisfied with their camera models. These superlatives sum up what people usually look for or could look for at an overall level in their camera. It is a broad evaluation based on design elements, size and affordability. Before you make a decision to purchase you should explore a little further and study the type of features available to you. Unless you make the attempt to understand the features at your disposal, there is the risk of being stuck with a model that does not suit your particular requirements. Let's take a look at what features you should look for, as well as the features that you should be wary of when you choose a camera system. -->Features to Look For 1. The lens is by far the most important device in your camera. The quality of the lens ensures the sharpness of your image. The camera lens is described by length (given in mm), known as the focal length of the lens. 50mm is the standard focal length in a lens. A lens of shorter length is known as a wide-angle lens and is used usually by landscape photographers. A lens with focal length greater than 50mm is called a telephoto lens and is especially useful to professional photographers in capturing distant images. There are also cameras with a zoom lens. A zoom lens can offer various focal lengths, so you have a lens capable of many focal lengths. Simple put, when you use a zoom lens you can make your subject bigger or smaller within the frame. For instance, a wide-angle zoom can cover a range of focal lengths below 50mm, or a telephoto zoom gives you a range of higher order focal lengths. Some superior zoom lenses can take you from wide angle to standard and through to telephoto ranges. The power of the zoom lens is defined by the extent of magnification from a lower focal length to a higher end and is given as 2x, 3x and so on. Some lens tips: --A 50mm or 100mm lens is considered adequate for most non-professional hobby users. The professionals usually go for telephoto lenses of 200mm or more. A lens with higher focal length costs a lot more. Most beginners don't need to invest in a telephoto lens. --Check if your camera is compatible with the range of lenses that the manufacturer of your model has on offer. Most manufacturers have hundreds of lens options on offer and your requirement for lenses varies as you progress in photography. Your camera has to be compatible with lenses of higher focal length and speed. If you are planning to upgrade your camera by buying another model from the same manufacturer, check for compatibility with older accessories so that you can put to use some of the lenses already available with you and save yourself an additional expense. 2. Depth-of-field preview button A depth-of-field preview button is a necessity if you want to achieve better focus. It allows you to identify the area that will be in focus in your photograph. This area is referred to as the 'depth of field'. When you adjust the focus in your camera the preview button is a useful tool that can help you vary the focus and depth of field in different shots. 3. Image sensor resolution In digital cameras, there is no film in use but this is instead replaced by a device called the image sensor. The image sensor renders colors, is sensitive to light and is the device that captures images in small pixels on its surface. Image resolution is a measure of the sharpness or level of detail in photographic images. Image resolution is expressed as a number and is measured in mega pixels. High-end professional use cameras have an image sensor resolution of around 12 mega pixels and the most advanced professional models go up to almost 14 mega pixels. At the mid range you have camera models with resolution ranging from 2 - 6 mega pixels. To deliver large format prints of superior quality, you should go for models with resolution greater than 3 mega pixels. At the lower end, you have models of 1 mega pixel or less and the sharpness of the photograph is slightly inferior compared to cameras with higher values of image sensor resolution. Lower pixel models are best suited for small format prints. 4. If you have the facility for Auto-bracketing it can be a very useful tool. Auto-bracketing enables the camera to automatically take 3 exposures or in some cameras 5 exposures of the same shot by varying the Exposure Value (EV) to lighten or darken an image. Each of the images will be slightly differently exposed and this is a great tool to ensure that you capture the moment perfectly. You can bank on at least one being a properly exposed picture. This tool comes in handy especially for professional photographers. 5. If tonal quality of the photograph is your top priority when you choose a camera then it is best that you go for a digital camera. Photographic prints of scenes captured on a digital camera have a level of tonal quality that is far superior to best quality traditional prints. 6. There are sophisticated camera models available today that can capture movement and audio-visual images. If you want to go beyond static images and capture the first steps of a child or activities during family get-togethers, then you should look for a camera with these advanced capabilities. It will create a better experience when you go down memory lane. The Kodak Easyshare LS753 Zoom Digital Camera is one such model that offers audio-visual capability. Bracketing and How To Use Tt Correctly... What Is... Exposure Bracketing Start Up a Nude Photography Business There are major obstacles to overcome to get into nude photography, not least of which is the need to practise technique. By its very nature there has to be at least one subject, and the big problem for the photographer here is image. To some the image of nude photographer is tied in with the "dirty Macintosh" brigade, with the false wig and dark glasses. Digital Camera Metering Looking at the most intricate details of the digital camera as a technologically advanced device a lot of functions come into play. Such s a point is that of the digital camera metering. This discussion focuses towards that intention of understanding and knowing the details of the component. Basically speaking the metering system in a digital camera measures the amount of light in the scene and calculates the best-fit exposure value based on the metering mode explained below. Automatic exposure is a standard feature in all the digital cameras. All that is requires to be done is select the metering mode, point the camera and press the shutter release. Most of the time, this will result in a correct exposure. The detailed explanation and analysis of the entire process is as follows in the next lines of this discussion. How Many Megapixels Do We Need? Are you having megapixel envy each time you walk by the camera section of your favorite electronics store? So do I. But, do we really need more and more pixels? The answer depends on what we intend to do with the images. First, a quick definition of megapixel: Black & White Photography Photography is a diversified field of creating a spectral variety of art. It is a specialization that deals with different experimentations with colors, however it is also a fact that only shades of black and white can also do wonders in this zone of creative art. With the advent of the digital camera the scope of this wonderful business has opened up new horizons for the users and photographers who seek to explore new lands and trod the ground of innovative creation and thus it can be aptly said that black & white can become more creativity with the boon of digital photography and digital camera. This discussion is primarily aimed at exploring the incipient information regarding the blessing of the digital camera in black & white photography so that the novice as well as the expert photographers can become richer in knowledge! Take Spectacular Nighttime Photos with Your Digital Camera - Part II Night photos can take on a somewhat magical quality you may find lacking in normal daytime photography. Amazing night pictures certainly can attract attention. As the sun goes down, however, it becomes harder to capture images without the proper equipment and techniques. Thus, as was mentioned in Part I of this series, taking incredible nighttime photographs requires a lot of planning. Digital Wedding Photography: Myth Vs. Reality 1. Myth: Digital photos are pixilated or fuzzy. Reality: most people that say that have never seen a photo produced by a professional grade digital camera. The quality of modern digital cameras is equal of greater than film cameras. Terms Used The In The Stock Photography Business So you are a small business person or web designer and you want to purchase some stock photography for your website. Great. Photography is a wonderful way to improve the emotional impact of your site. But there are a few terms unique to the stock photography business that you should know. Panasonic Digital Cameras - The History Behind Their Cameras Panasonic is a world-renowned consumer electronics company today. Its digital cameras have recently entered the market. In this article, we will view the story of Panasonic and some of the latest cameras which have been launched by the company in the market. Canon Digital Camera - from Humble Beginnings to World Class Company Started in a single-room by three Japanese men in the year 1933 under the name of Precision Optical Instruments Laboratory, Canon has come a long way today. It all began with the phantom prototype camera called the 'Kwanon'. At that time, Germany was considered to be the leader in camera production. German cameras were extremely expensive. So, Goro Yoshida, along with two others tried to produce a 35mm rangefinder camera at a cheaper price and came up with "Kwanon'. Who Had The Better Brushes Leonardo or Michelangelo? Ordinary photos of dull subjects do actually sell, but the dramatic shots generally have an unusual element that makes them stand out from the crowd. They are well-composed and they carry no excess baggage. Digital Imaging Explained Digital Imaging is a process where an electronic photograph, scanned document, or image is converted into a series of electronic dots called pixels. Pixels is an acronym for "picture elements". Photography Workshops and Master Classes Several years ago, I met a fellow photographer - albeit, he was an amateur, a very good one (the difference is not the quality of the work . the difference is that one does it for love, the other does it for money). He is now a new friend and fellow photographer named Marco, an Italian. His day job is as a top children's heart surgeon. His passion for photographing people takes him all over the world, seeking out that special face, interesting enough to be captured on film/file. Photography 101 Part 3 Content
|
|
|
|
|
