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Photography – Choosing the right lens
Slowly but surely, the value of the fixed focal length lens (or primary goal) to the non-photographer professional is being eroded by the growing sophistication of technology zoom lens. The days when you packed your camera bag with 28 mm of confidence, 50mm, 85mm, 105mm and 180mm, including the lenses are rapidly disappearing. Why bother when you can just reach something like the Nikon lens for all purposes Nikkor 18-200mm DX VR Zoom and know that you have the flexibility and speed optical reach?
The truth is that, although the range of focal lengths can increase in a single zoom lens, not all objective lenses is always likely to perform at the level of eqivalent main objectives for its range of focal lengths.
Zoom are designed with much more glass is a primary goal, and for this reason that "swallow" more light than the target for the same coordination length. Unless you are shooting with very bright light, the time required to increase the length of a zoom shot can make the difference between a good image, and one that is ruined by the camera lens wobble.
Still, much could be said to carry one lens, and leave it connected to the camera, instead of carrying five glasses and having to miss the photo opportunities that arise while you are changing the lenses.
But think about fixed focal length lenses can be instructive. As we enter the picture with a zoom lens, the continued efforts of the focal lengths is able to blur the distinction between the photographs taken in different focal lengths. Historically, this was not a problem. Economy demanded that the lenses that were purchased quite different focal length wise, and so an appreciation of their individual characteristics was easy.
50mm
It used to be that the purpose of the kit for 35 mm SLR generally a 50mm lens away focal. The 50mm lens plays a field of view that approximates normal vision, with a coverage angle of about 50 degrees. But this is also partly the reason that the 50mm lens receives only a fraction of the respect it deserves. Because when you look at the scene captured by an image of 50mm, we will not see something we could not have seen with our own eyes. This means no optical effects to approach the image, so that the subject material must be strong enough to call our attention.
Despite the fact that the 50mm lens kit has been replaced with an optical zoom lens (usually in the range of 28-80mm these days) The 50mm lens has much going for it. First, in general very fast. My 50mm Lens Kit (collected decades ago) is an f/1.4 Nikkor. Marking the largest opening can get away with not using the flash when taking pictures indoors under natural light. This means that your shots will look more natural, and has a depth to the images that washed captured with a flash just can not match. It will also be able to shoot fast. The focal length equivalent to a zoom could be two or even three more stops slow.
If you use the camera to record pictures mostly family, and was shot inside much of the time, you may wish to a serious look at picking up a 50mm f / 1.8 or even 1.4 if you have the money to spend. To read an excellent essay on the recognition under the 50mm lens, I recommend The Forgotten Lens by Gary Voth.
28mm
Open a book on photojournalism, and discover a series of images captured with wide-angle lens 28 mm lens as the first. Wide angle lenses have a primary pronounced curvature noticeable on the front lens element that helps bring to light all around the edges of a scene. This has two main effects.
The first is that a much larger part of the scene before being captured. Extremely short focal length primes, such as 8mm, are known as fisheye lenses, because the coverage angle exceeds 180 degrees. Everything ends in front of the camera in the picture!
The second consequence is to amass more of the scene image distorts the image to some extent. The straight lines in the real world as the horizon and the edges of the walls, become curves. Most times this is acceptable, because the capture of the scene is the most important consideration.
Use a wide angle of 28mm as the first necessary when trying to capture images in confined spaces. To pull all members of the Board at the annual meeting, while they sit on the conference table, and to get around the table and the room in which the approach requires a wide angle lens. The other situation that requires a wide angle arises when you're trying to photograph a subject that not everything can be in the frame. If you were taking a picture of someone standing at the base of the Eiffel Tower, with a wide angle will help you fill the frame with the subject and the tower.
85mm to 105mm
I mentioned the usefulness of the 50mm main to take the portraits. However, the goal most often mentioned in connection pictures with the 85mm prime, usually with a maximum aperture of f/1.8, or even faster f/1.2
The 85 mm is sometimes referred to as a telephoto short. Unless your goal is to capture only the upper torso of your topic, or just his face the closer, you will need to capture the subject from head to toe. This means you can often take discreet and spontaneous portrait shots simply by being in close proximity to his subject as they go about their activities.
But the true strength of 85 mm or even 105 mm, main, is the ability of the lens to get in close and highlight the features of the subject's face. The fund these vaccines is not the least, and the maximum aperture opening will be able to throw the background completely out of focus. Focusing becomes critical in this situation, so concentrate on the subject's eyes can never focus acceptable portrait shots.
180
There will always be times when they can not approach the scene to be photographed. This is where telephoto lenses are useful. Medium telephoto range as those offered by 180 mm is useful for primary photographing local sporting events where you can approach the edge of the field.
Telephoto Prime capture only a small part of the scene before you, so to throw light enough that you can see the scene correctly, the size of the lens has to grow. In other words, your 180mm lens will weigh you a little. For this reason, even if you're shooting at maximum aperture is a good idea to use a monopod to calm his shot. Hand holding a telephoto quickly becomes not only a task but a great way to decrease the likelihood of a sharp image. This is where the incorporation of technology to reduce vibration lens (or image stabilization, as it is also known), may be advantageous (but very expensive for telephoto lenses).
Like telephoto lenses it was short and focusing becomes even more critical here. Unless your subject is still relatively quiet, or your lens is capable of fast auto focus, some actual amount of practice is needed before we can always shoot action photos with a large telephoto lens. Moreover, the results are worth it.
So, in conclusion, I have summarized the characteristics and uses of several different focal length lenses. Try to keep these features in mind if you are shooting with a zoom lens that covers some or all of the focal lengths discussed here. If you think about your shots in terms of these different characteristics of length Focal will be better able to exploit them to improve their photography.
To help you choose a digital camera properly to begin with, I developed an article for you about how to find the beginner right Digital Camera.
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About the Author
Stephen Carter is a web developer and creator of the review site application Review Foundry. He is also the creator of Best Digital Camera Discounts His interest in photography spans decades.
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