Photography For Beginners - understanding Lenses

Interested in increasing your camera kit with an extra lens or two? Not sure about lens establish and terminology linked with Slr lenses? Here is some facts that may help in production that prominent decision. Good lenses are expensive and you need to get the optimum value for your purchase.

[b]Lens[/b]

Types of Lenses

There are many types of lenses on the market today, too many to cover in detail here, but here are the most tasteless types you will come over in your pursuit.

Prime or Zoom?

The first consideration is to settle either you want a zoom lens or a prime lens. A zoom lens has variable focal length so it can function as several lenses in one package. A prime lens is fixed in focal length, so it is restricted to photography that is linked to its size.

Photographers will still argue that a prime lens is always going to accomplish a better supervene than a zoom. This is an optically sound argument; however, there have been some serious advances in visual technology over the past decades and the contrast is now minimal.

Normal Lens

This lens is a prime and has a fixed focal length of 50 or 55mm. It is called a normal or appropriate lens as it provides a supervene the same as our normal viewing perspective. It is considered to be an all purpose lens and regularly the first choice if purchasing a prime.

Zoom Lens

A zoom lens covers a variable focal length, the most popular being the 35 to 70mm zoom. This lens will give the same coverage as several prime lenses over this range.

Telephoto Lens

A telephoto is any prime lens with a focal length longer than 50mm. Lenses greater than 300mm are called super telephotos; these are commonly in the 300, 500 and 1,000mm range. The greater the telephoto focal range, the greater the price tag.

Mirror Lens

A mirror lens is a telephoto lens but uses a composition of lenses and mirrors to accomplish its telephoto capability. The main contrast between conventional telephotos is its size, commonly a lot shorter. This is great for handling and a economy alternative. The downside is it has a fixed aperture and provides less resolution.

Shift Lens

This lens is also known as a perspective improvement lens, and has a rising and falling front panel that corrects perspective distortion and converging lines. These are mostly used in architectural photography.

Soft Focus Lens

These lenses are designed for separate formats, are not that tasteless and so are very expensive. The lens provides varying degrees of softness and is generally used in fashion and portrait photography.

Macro Lens

Macro lenses are commonly prime lenses and come in various focal lengths (not to be confused with the macro setting that most lenses come with). Macro lenses are for the serious macro photography as they are very expensive. Macro lenses are for ultimate close-ups at a ratio of 1:1, 2:1 or larger.

Teleconverters

These lenses contribute a cheap and easy way to expand the range of focal lengths without having to buy more lenses. These are fitted between the lens mount and the lens and growth the magnifying power of the former lens. A typical ratio is 2x and 3x converting a 50mm lens to 100mm and 150mm lens respectively.

These are a few ways to growth the capabilities of your camera that enables you to witness a greater variety of photographic subjects. Some are expensive, but others such as described here are not. There are some cheap alternatives available to help you take a supplementary step in your photography.

Photography For Beginners - understanding Lenses

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Photography For Beginners - Telephoto and Wide Angle Lenses

A new digital camera comes with a multitude of features, but one of the first things we consider is the ability and power of the lens. But how many of us for real understand what can be acheived by creative use of lenses?

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The inequity in the middle of a wide angle lens and a telephoto lens is about more than just magnification. To get the most out of your lenses, you also need to understand how they influence depth of field and perspective.

You already know that the telephoto lens enlarges all things in the picture. But did you also know that when you zoom in, or attach your large telephoto lens, you also sacrifice the depth of field around the subject? This is a great formula for eliminating a distracting background from your photo. The supervene is twofold: the narrow field of view minimizes how much of the background we can see, and the small depth of field ensures it will be thoroughly out of focus.

So when photographing subjects like habitancy and animals, using your telephoto lens (or zooming in with your zoom lens) is often the best approach. The supervene will be a very three dimensional effect, with the field appearing to emerge sharp and clear from the blurry background.

On the other hand, your wide-angle lens does just the opposite. It for real does a lot more than just make all things appear smaller. The wide angle lens takes in (as the name suggests) a much wider angle of view, and it has a much stronger depth of field than a acceptable or telephoto lens. That means that not only will you see a lot more of the background in your photo, but it will also be much more focused.

Consequently the wide-angle lens is not so good for portrait style photos, because the background is too distracting. On the other hand, it is perfect for landscape pictures, especially when you have objects both in the foreground and background that you need to keep in focus.

The other aspect of your selection of lens is perspective, which is a lot harder to account for without pictures, but I will give it a go.

Have you ever watched a cricket match on television? (If you are from the United States substitute baseball here). When you see a close-up image of the batsman, you may consideration that the wicket keeper (shortstop) seems to be standing right behind him, and the crowd is only a short length additional back. When you see a side-on view, you may be surprised to see that the wicket-keeper is standing about ten meters behind the batsman, and of procedure we know that the grandstand is a good 60 meters or so additional back. So what's going on?

The acknowledge is simple. The very large telephoto lens used for the close-up shot tends to make objects at different distances seem much closer to each other than they for real are. In short, it compresses the natural perspective, development habitancy separated by some length appear to be quite close to each other.

This principle also applies to landscape photography. Dream a scene with a tree in the foreground and a mountain range in the distance. By standing a long way from the tree and shooting it with a telephoto lens, you will also improve the mountains in the background. As a result, they will appear much closer to the tree than they for real are.

Now Dream taking the same scene with a wide-angle lens. By standing a lot closer to the tree, you can photo it in such a way that it takes up the same amount of space in the composition. However, by reducing the scene to fit the tree in the frame, you also sacrifice the background...making it appear much additional away than it for real is.

In this way, the wide-angle lens does the opposite of the telephoto lens. It exaggerates the perspective, development objects at different distances appear much additional apart than they for real are.

Put simply, the end supervene of these two approaches is this; the telephoto lens adds prominence to the background, which will appear relatively large in your photos (albeit with depth of field issues in some cases). The wide-angle lens adds prominence to the foreground, development the background appear much smaller and more distant.

Thus by simply changing your selection of lenses, you can dramatically alter the impact of your photos. Dream the creative possibilities; you have the power to operate how the viewer sees not only your subject, but how it relates to the surroundings at the same time.

This is a tough field to account for without pictures, but hey - you have a digital camera. Why not step covering right now and try out a few of these ideas. Or if you are feeling lazy, sit down and watch some sport on telly. It may for real teach you something about photography.

Photography For Beginners - Telephoto and Wide Angle Lenses

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Dslr Lens For Beginners - Sigma 18-250

How would you like to attach the very best lens to your new Dslr, one that will handle practically every situation you will face as a photographer? Well you can. Read on to find out about the Sigma 18-250mm Dslr Lens.

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When most photographers purchase that first digital Slr camera, they just take it for granted that the lens that comes with the camera is the best one they can get. It ain't necessarily so.

What is generally know as a kit lens, the one that is marketed with the camera, is an adequate lens, there is no doubt. However, you would do yourself a disservice if you did not do a bit of explore and reasoning about what your needs are before you take the plunge and spend in a lens that may not necessarily be the right one to meet your needs.

Take into observation what your needs are. First of all, you want to be able to take a wide range of shots, which means a diverse range of focal lengths.

You may also like to keep a single lens on your camera when you are consuming about or traveling.

Depending upon your budget, you may also be seeing for the absolute best inherent lens for the money without having to auction off your first born child.

The Sigma 18-250mm lens fills the bill for all of these criteria. It has a diverse focal range so that you can take wide angles shots such as landscapes or cityscapes on the one end. And it has a zoom range up to 250mm to get those long range shots, such as nature shots in the wild or at the local zoo.

The image ability has been rated as very good by those who test camera equipment. The build ability is also rated very good.

It is fast to focus because of the hyper-sonic motor.

There is high ability glass in order to avoid distortion of the light entering the camera through the lens.

On the negative side, the Sigma 18-250mm lens is not as fast as some of its more costly competitors. It has an aperture of f/3.5-f/6.0. What that means is that a lens with a more wide open aperture, say f/2.8, would have a much faster shutter speed, manufacture it a great lens for low light shots. Of course, if you want a lens with f/2.8, you will have to pay much more for it.

Dslr Lens For Beginners - Sigma 18-250

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