United States unemployment rate
The U.S. labor market continued to add new jobs in January, pushing the unemployment rate to the lowest level in nearly three years, in a sign that the economy is recovering from the worst recession in decades. The Bureau of Labor Statistics said January’s unemployment rate fell to 8.3% from 8.5% in December as the economy added 243,000 jobs, a much better result than the 125,000 to 150,000 jobs that many analysts had been expecting.
The overall trend trend in the report pointed to strengthening momentum in the U.S. economy. The number of unemployed persons fell to 12.8 million, the lowest number since February 2009, which was President Obama’s first full month in office. Professional and business services added 70,000 job, while the manufacturing sector increased by 50,000. The construction sector, meanwhile, added 21,000 new jobs.
A broader measure of unemployment, the so-called U-6 figure, which includes those with part-time jobs, fell to 15.1%, down one-tenth of a point. Even the Labor Dept.’s revisions for previous months contained good news. November’s job growth was revised from 100,000 to 157,000, while December’s figure increased from 200,000 to 203,000.
The better-than-expected results came even as the number of government jobs declined by 14,000. The strong data is sure to be welcomed by the White House, which hopes that a strengthening economy boosts President Obama’s re-election hopes.
Despite the good news, the economy has a long way to go before it reaches a full recovery. Some 12.8 million people are still out of work, and the unemployment rate of 8.3% is nearly twice what’s considered healthy. But the data suggests the labor picture continues to move in the right direction.
Source: Times.com
The focal length of a lens refers to the actual length of the lens from a point inside its front lens element to the point where it comes to focus -- in our case, that is on the camera sensor -- when the lens is focused at infinity. Modern optical systems and zooms can make this calculation more exacting, but this definition is sufficient to understanding the elementary difference between lenses and how to use them creatively. Focal length is typically expressed in millimeters for modern DSLR lenses.
What we call a "normal" lens is one where the focal length is approximately equal to the diagonal of the sensor plane. On a full-frame (35mm) sensor that would be a 50mm lens. On the smaller APS sized sensor that would be a 35mm lens. All other focal length categories are given relative to what is "normal".
For instance, a wide angle lens is one that is wider that a normal lens, while a telephoto lens is longer than a normal lens.
Wide angle lenses take in a larger visual area that makes them most suitable for wide landscapes, while telephotos act more like telescopes for close-up viewing of distant subjects. These are the obvious, practical reasons for selecting one focal length over another. More importantly, however, are the creative characteristics each focal length has.
Well i guess you got some basic idea about focal length. lets have some break till we comeback with more detailed post about focal length. meanwhile i recommend you to go through some of the articles recommended below (external links of course).
- Photography tipsUnderstanding Focal Length (nikonusa.com)
- Available Types of Camera Lens (richardhoffkins.wordpress.com)
- Why Prime Lenses? (photofocus.com)
- Buying Guide: Best budget telephoto zoom Nikon lens (techradar.com)
Welcome back guys…. If you have been following my blog from lately, you might be already aware about my craziness in photography. Even though my blog contains contents from all topics, photography is one major Topic in those.
