How do I recognize the SLR camera with a telephoto lens and a short focus lens?
So when you distinguish, look at the lens of the focal length, you know is wide-angle lens, the standard lens or telephoto lens! For example, Canon 16-35, is a large wide angle - wide angle lens. 50F1.2 is the standard lens. The 70-200 is the standard - telephoto lens.
The larger the focal length, it means that the smaller the range can be taken, the farther the distance is. In the lens division inside, the lens shooting range is less than 28 is wide-angle lens. 28-35 is a small wide angle. And 35-100 this range is the standard lens. More than 100 is the telephoto lens.
The manufacturers in the manufacture of the lens when basically follow a common standard, that is, the smaller the number of focal lengths, the greater the range of shooting, shooting the shorter the distance. Which is usually said that the wide-angle lens (no short focus lens said).
In general, the lens is named by the focal length. For example, Canon 24-70, 70-200. That is, focal length 24 - focal length of 70 lens.
