Camera lens divided into a total of several cameras divided several basic use of the camera more points
Four: special lens: designed for special use of the lens, usually used for professional areas.
Most of the cameras used in the studio are equipped with the camera according to their own needs.
Three: digital lens: refers to the characteristics of digital SLR camera design or improvement of the lens.
Two zoom lens: refers to the focal length in a certain range can be freely adjusted within the lens.
1. The type of zoom lens:
A. Manual focus and auto focus. Depending on the focus mode, the zoom lens can be divided into manual zoom lens and auto zoom lens
B. Zoom range, in general, 20-40mm called wide-angle zoom lens, 35-70mm called standard zoom lens, 70-200mm called COS-wide zoom lens, 200-500 called telephoto zoom lens. Of course, there are many lenses include wide-angle to the coke, and even telephoned range, such as 28-200mm, 28-300mm, etc.
C. Zoom magnification. (For example, 35-70 mm), 3 times (e.g., 70-210 mm), 5 times (28-135 mm), 7 times (28-200 mm), 10 times (50 to 500 mm), and the like from the zoom magnification. In general, the larger the zoom range, the larger the volume, the picture quality is relatively low, the aperture is relatively small.
D. Zoom mode. According to the different operation, divided into push-pull zoom and rotary zoom two. The advantages of push-pull zoom is easy to use, you can quickly zoom from the far end to the nearest end. The disadvantage is that when the pitch shot is easy to slide the lens. The advantage of rotary zoom is that the focus ring and zoom ring are independent, and the rotation operation does not interfere with each other. But the operation is not as easy as push and pull, especially when using the "zoom shooting explosion effect", it is better to push and pull zoom easy to achieve.
Lens type:
A certain focus lens: focal length fixed lens is called "fixed focus lens."
1. Standard lens (referred to as the header):
2. Wide angle lens:
3. telephoto lens:
4. Fisheye lens:
5. folding lens (reflective lens):
