Cellphones, microchips, cars, even iPhones—there's virtually no high-tech Western product that China's cloners can't copy. Pretty soon, you might even prefer their work
Depth-of-field refers to the amount of the scene that appears to be sharp in your shot. Unlike our eyesight, which compensates for limited depth-of-field by quickly scanning different areas of the scene and focusing on near and distant points, camera lenses must obey some simple physical laws. Chiefly, depth-of-field extends in front of and behind the point you’ve focused the lens on. This zone of sharpness is not distributed evenly, however: it extends twice as far behind the focus point as it does in front of it.
The amount of depth-of-field in your shot is determined by three factors – the focal length of the lens, the aperture used and the distance from the subject.
1. Focal length. The shorter the focal length of the lens the greater the depth-of-field, and the longer the focal length, the smaller it will be. In general, using wide-angle lenses you’ll find that most of the scene is in sharp focus, while telephoto lenses are better for giving shallow depth-of-field, allowing you to throw distracting background elements out of focus, beyond depth-of-field.
2. Aperture. The wider the aperture you use the less depth-of-field you’ll get. So, using a wide aperture of f/4 or f/2.8 will mean that less of the scene will be in sharp focus than if you use a small aperture, such as f/16 or f/22.3. Distance. The closer you are to the subject the less depth-of-field you’ll have to work with. You’ll find it easier to get greater depth-of-field if you focus on subjects further away from the camera. Conversely, if you want shallow depth-of-field, move closer. This is most apparent when shooting close-ups, where you’ll get very shallow depth-of-field.
History of the website
The idea of Photocritic started in the late 90s: I had a grand idea of starting a photo criticism site, based on the Norwegian foto.no photo critique site, but aimed at an international audience, and on a far greater scale. I started looking into hiring a programmer to do the work, and started learning how to code myself as well. Soon, it turned out that the idea was a bit optimistic, and eventually I stumbled over a site called PhotoSIG, which had all the functionality I wanted from a photo criticism site.
By then, however, I had bought the Photocritic.org domain, and I figured it was too good a domain to just ignore. I used it as my photography portfolio for a while. In 2002, I started out as a freelance photographer, and as it turned out, Photocritic was not used as a company name by anyone, and soon, Photocritic Ltd was born:
TAIPEI, Taiwan: When Marvin Ho co-founded a Chinese language school in Taiwan in 1957, his only students were a handful of Western missionaries.
Five decades later, it is a different story. Ho's classrooms are packed with scores of people clamoring to learn what they believe is the next global language: Mandarin Chinese.
China, having traded socialism for capitalism, is emerging as an economic power, perhaps the only one that could rival U.S. dominance in the 21st century. For a new generation of students, business people and even artists, the land of opportunity now lies to the East, not the West.
Here's how it works: