| |
| |
|
Photography Information |
|
|
|
Digital Zoom Versus Optical Zoom
The digital camera is but a technological advancement of the conventional analog camera. And thus every component of the analog camera must have been upgraded or changed to bring in some improvisations. This discussion is an effort to unravel alteration and make one comparison between what was and what is! This discussion is thereby focused upon a very critical component of a camera (analog as well as digital), the zoom! Before making a comparison it is important to discuss the significance of the subject matter, in this case the zoom. Well a zoom lens has more than a few portable glass components inside it. By adjusting these components, the focal length of the lens can be altered. Modifying the focal length alters the view distance as well as reduces the field of view, thereby making the projected image to appear larger. It must me noted that both the optical zoom and the digital zoom are components that are used to magnify an image, but they work in fundamentally different principles and acquiesces drastically different results. In general, optical zooms always produce a far finer and advanced image than digital zoom. Looking at the functions of these zooms, in digital cameras that offer optical zooms function the same way similar to a zoom lens of a conventional analog camera. A conventional lens works by accumulating light rays that are projected over a portion of a film, and in this case of a digital camera optical sensor. The distance of the lens from the focus point where all of the light rays converge is known as the focal length of the lens. Unlike the optical zoom, the digital zoom works by ranging the pixels in the ultimate image after the image has been captured. The fact remains that the same number of pixels are collected when the photograph is magnified. The only thing that alters is the light rays that are projected over the optical sensors to figure out those pixels. It is a common intuition that optical lenses are far better than the digital zooms. The reason is that the digital camera zooms are more prone towards computer applications in them rather than mostly human interactions and expertise. Yet, it also remains a fact that beginner photographers find it more useful to handle a digital zoom and also its computer friendly nature. There the computer does the intricate tasks of finding some levelheaded approximation of colors that pixel might take up as it had captured the images or photographs. Many algorithms are existent in this area, but perhaps the most abundantly used algorithm involves looking at the pixels that are quite nearly like neighbors and come up with a kind of an average. Anyways the process remains too complicated and its end result is what the digital zoom users are interested in. Thus the ultimate truth remains that it is useless to compare digital zooms with optical zooms. Perhaps it is more logical to compare optical zoom with optical zoom and digital zoom with digital zoom. Both these two types of zooms, the optical as well as the digital, have some good and bad qualities. Both of them have some extra features and preferences over the other. And thus it is not wise to compare them, even though a comparison may exist. The efforts would then perhaps look like comparing oranges with apples! 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.
MORE RESOURCES:
Google News |
|
|
|
RELATED ARTICLES
Get Closer to Your Subject Almost any shot will look better if you take two or three steps closer to your subject. Filling the frame entirely with your subject will make a terrific difference to your photos. Applications of Underwater Video Cameras There's so much you can do with an underwater video camera. If you enjoy snorkeling or diving, you can use the camera to show your friends and family the beautiful tropical fish, colorful coral reefs, and other underwater treasures you encountered on your vacation. Light Meter Readings for Film and Digital Reflected Light Readings for Film and Digital ImagesIn order to correctly expose your film or digital CCD there are two variables that must be identified: average reflectance and average light. Unless you have some good reason to meter for other than these two averages, stick meticulously to the method outlined below. Elephants in the Sky and Four Poems Elephants in the Sky[1980s, Lee Evens in Mali, Timbuktu/Africa]Advance: Lee was discharged from the Army in 1980, whereupon, he traveled the world, one of those locations was in Mali, by the legendary city of Timbuktu; whereupon he found himself in the middle of a plague, a plague of locust.[Diary-review]There were swarms of locust over the top of my car, in front of me, swarms, a dark shadow covering the sky, descending, descending onto the road-in front of me, behind me, it was locusts, locusts, locusts-locusts everywhere: so thick, thick as layers that my car was slipping and sliding as if on ice. Removing Spot Scratches in Your Treasured Photos - 5 Minute Digital Fix Probably one of the most common problems you will be faced with in doing any type of digital photo restoration work will be to do with spot scratches on your old photos.When we first look at those old black and white or early colour photos they often have small scratch marks and spots on them from being stored incorrectly. Digital Camera Printers The digital camera is not meant only for capturing images and storing them on the computer memory disks. The real effect comes from the hard copy of those fantastic images taken by the users, that is the printed photographs! In order to get the printer copy of the images a very important device necessary is the printer. Digital Camera Interpolation Explained In a device such as a digital camera it is very important to understand the very basic aspects of the device so as to properly operate it and give it the due respect it deserves. Such a topic is interpolation! These are accessories that help the digital camera to perform the technologically advanced features that it is capable of. How To Reduce Red Eye The Easy Way With Any Pro Or Point & Shot Camera There is one simple technique any body can do to eliminate red eye. It can be done with any type of flash on any camera because red eye only happens when using flash. Christmas Rush this Holiday Season to go to Digital Photography So you have rushed out into the malls in a mad panic for this christmas holiday and are going to purchase a electronic item on Credit think again. Consumers are paying again through the nose agin this year 1. 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. Freelance Photography: How to Begin Your Career Photography is a vast world. There are many different types of photography and many different kinds of people that enjoy it. 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. The Truth About Pixels, Part 2-1: Printing 4x3 Inch Photos Why is a 3 megapixel camera better than a 1 megapixel camera? It really depends on how you intend to reproduce the picture. The reason cameras produce pictures at 72 pixels per inch is that this format is standard in video uses such as television and DVD. 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. Underwater Digital Cameras Underwater photography's is primarily focused towards entertaining and informing the people and the users themselves about what is happening in the world of under water with the aid of photography. The advent of digital cameras has opened up new horizons for such ventures. 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. How to Create a Family History Video Memoir with Photos and Interviews of Your Loved Ones Here are examples of two basic videos you can create quickly on a great budget:Example A - Do-it-yourself for around $125 + extra copies1. The interviewRent a digital video camcorder or if you have one already, use it. The Naked Truth on Shooting Nudes 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. 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. Photography Jobs: Do You Have a Future in Photography? There is a wide world of photography. It touches each of us in our lives on a daily basis in some form or another.
|
| home | site map | Seashell Photography |
| © 2006 |
