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When shopping for a digital SLR camera people often overlook or skimp on 's lens of the camera. Objectives serve as digital SLR cameras "eye," the lens determines what and how the camera sees your subject and how this thesis is sent to 's camera's sensor chip for recording. The way I like to watch the camera lens is like the brush painter, in broad terms, Stokes media, all purpose brushes, and small detail brushes.There is much to learn about digital slr camera lens, and this article will serve as the background to understand them. The following sections explain the basic types of lens reflex digital camera, how they work and how to select them.
Focal Length
On a digital SLR camera lens focal length measures the distance between the lens and the image sensor, measured in millimeters. The lenses can be classified intosubgroup as the first, macro, wide angle, normal, telephoto, and zoom lenses. They are also rated for f-stop or speed of an example would be a goal or a 1.4F 50mm F2.0 80 mm lens.'ll Explain later in this article.
Prime Lenses:
prime lenses are fixed focal length lenses like a 50mm 1.4f lens. To zoom in with this type of lenses you must use your feet and closer or farther away from the subject. Traditionally, the firstlenses are sharper and faster than zoom lenses. If you're on a budget you can pick up some incredible first used old lenses off eBay or your local photo shop.
Macro Lenses:
Macro lenses are detail brushes that allow you to get up close and personal with the subject. These types of glass are used for extreme close-ups of small objects like daisies, coins, and food, but not limited to these types of subjects. Examples of macro lenses are 50 mm and100mm macro. These lenses are also ideal for the types of selective focus photos.
Wide Objectives:
Wide-angle lenses are your broad brush stroke, these types of lenses have focal lengths. The focal length is the visual effect of "pushing" the subject away from you and making it appear smaller. The beauty of wide-angle lenses is that you can be relatively close to the subject and attach a shot wide of the bottom stage.
One problem withwide-angle lenses is known as convergence, a distortion that makes vertical structures appear to lean toward the center of the frame. One way to check if you are interested in wide-angle, there was convergence is to take pictures of try before you buy the lens. With high-quality lenses such as wide angle lenses Canon L series addressing this issue of convergence well . Examples of wide-angle lenses are 15mm, 17mm lenses, 24mm and 28mm.
Normal lenses:
Slow normal to feelto mimic how the human eye sees and some of the goals are the most versatile you can use. These are my all purpose brushes, and are halfway between a wide angle and a telephoto lens. If you buy just one goal to try and buy the fastest lenses can be normal, like a 50mm 1.4f lens. Some examples of normal lenses are 35mm, 50mm, 65mm and 80 mm a few consider it a normal lens.
Telephoto:
Lenses with focal lengths from 100mm and above are calledtelephoto lenses. A focal length seems to bring the subject closer to you and increases the size of the subject in the frame. Telephoto lenses also give players a look and feel and flatten the subject. These lenses are my brief brush stroke.
Zoom Lenses:
Zoom lenses are special because they can be very versatile. These types of targets vary in their focal lengths and there are many wide-angle, telephoto and wide angle to telephoto. In my bag I carry a17 mm to 35 mm wide-angle off my brush, 24mm to 70mm my medium brush, and a 80 mm to 200mm in my brief brush. With these three lenses I get a very board range of focal lengths for each situation. All my f2.8 zoom are at least through the lens range, which means that my f-stop can remain constant while I'm zooming in and out. These types of lenses are very expensive, but in order to get what you pay for. When shopping for a zoom control ratings range f-stop. An example is a 24 mm to 300mmF3.5-F5.6 lens meaning the lowest f-stop you can 'shooting range is a 24 mm lens, and when you zoom to 200 mm lowest you can go is f5.6. Zoom lenses can give flexibility and versatility in one lens. When purchasing a zoom lens to try to get one that is made of glass and is the fastest you can afford, you will not regret.
Understanding what these different groups of lenses can do will help make more informed decisions on what lenses to buy and whatput in your camera bag.
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Many believe that the quality of the lens is more important than the camera itself. In fact, this may be true. After all, is the lens that contains the light passes through the glass to create an image. Fortunately, just as cameras continue to improve from year to year, so do the lenses.
Objectives differ from each other in a variety of ways. However, for our purposes, we focus mainly on the differences of "focal length". To be honest, the mathematicalinvolved in determining exactly what constitutes "focal length" is far beyond my capabilities. Fortunately, we do not need to know exact technical details to make full use of what "focal length" provides.
To simplify things, think of lenses as on a continuum from "short" a "long". A short "lens" is often called a wide-angle "lens." This type of lens will give you a very wide view of a scene. A long "lens" is often called a telephoto "lens." This lens will give you a more narrow. For example, imagine a photographer standing on the field at the Super Bowl. If the photographer wants to take a photo showing the field, the stadium, the fans, everything - will use a short "lens". On the other hand, if the photographer wants to make a close-up of the quarterback - will use a long "lens" .
designation of focal length is given in millimeters. To put it simply, millimeter, the greater the> Lens. For example, a wide-angle lens could be 14 mm, while a telephoto lens may be less than 600 mm. The focal length has long been considered a normal "slow" on a 50 mm SLR (however, with digital cameras, may be closer to 70 mm). This particular length is called "normal" because it is closest to the field of view of the human eye.
Within my specialty of nude photography and erotic, the vastMost of my pictures are taken within a range of focal length of 18 mm to 135 mm. This range gives me a moderate wide-angle (18 mm), a moderate telephoto (135 mm), and everything else. This range offers a wide range of compositional choices.
Thanks to modern technology, you can now get a good quality zoom lens that will give you, in a single lens, a good range of focal lengths. It was not too long ago, zooming lenses were optically less than "fixed" lens. This meant that serious photographers had to change lenses whenever you wanted to change their field of view (even for very small changes, such as from 50 mm to 75 mm). Needless to say, this was inconvenient and expensive. Fortunately, we are in a place now where the quality of the zoom is excellent.
In fact, quality zoom lens has come so far that, to the naked eye, an image taken with a zoomSlower is usually indistinguishable in sharpness and clarity of an image taken with a fixed lens. In truth, all you really need to get started in this business is a camera and a moderate zoom lens (something in the range of 18-135 mm would be ideal).
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