Q:Camera lens g, d, e type what is the meaning

The older interface does not have a fuselage motor (17-35 F2.8D exception, this with an ultrasonic motor), and has a manual aperture ring; the E interface is not a separate breed, but in the D model lens On the basis of some simplified, the interface of the contacts are the same,

Q:What is the camera lens servo

In general, according to the camera, the camera can be divided into professional cameras, quasi-professional camera and ordinary camera three grades, whether it is a traditional film camera or digital camera, can be applied to this division. The lens can be divided into zoom and fixed focus two categories.

Q:SLR camera lens marked 2-2.4 / 9.7-48.5 what is the mark

, its Zeiss lens logo refers to the lens maximum aperture F 2 (wide-angle end) F 2.4 ( Telephoto end), 9.7-48.5 is the actual focal length of the lens (equivalent 38-190 mm).

Q:What is the difference between a digital camera CMOS lens and a CCD lens? Which lens is better?

CCD and CMOS in the manufacture of the main difference is that the CCD is integrated in the semiconductor single crystal material, and CMOS is integrated in the metal oxide is called the semiconductor material, the working principle is not essential difference. CCD only a few manufacturers such as Sony, Panasonic and other master this technology. And CCD manufacturing process is more complex, the use of CCD camera prices will be relatively expensive. In fact, after technological transformation, the current CCD and CMOS, the actual effect of the gap has been reduced a lot. And CMOS manufacturing costs and power consumption are much lower than the CCD, so many camera manufacturers use CMOS sensor components. Imaging: in the same pixel CCD imaging permeability, sharpness is very good, color reproduction, exposure can guarantee basic accuracy. And CMOS products are often transparent in general, the color of the material to restore the weak, exposure is not very good, due to their physical characteristics of the reasons, CMOS image quality and CCD still have a certain distance. But because of the low price and a high degree of integration, so in the field of camera or has been widely used.

Q:Camera lens divided into a total of several cameras divided several basic use of the camera more points

Three: digital lens: refers to the characteristics of digital SLR camera design or improvement of the lens.

Q:What is the lens aperture?

Since the aperture can be small or small, how much time the lens of the best quality imaging? According to the above figure, the minimum aperture F22 when the aperture with the pinhole almost, the digital camera has become a pinhole camera, said before the pinhole imaging is not good; aperture when the hole has become the largest hole, imaging is also poor. Therefore, according to the Chinese national tradition of the doctrine of the mean, please bear in mind: The lens is best in the medium aperture (the picture is most clear). We call the best aperture for the best aperture. If it is 135 digital SLR, medium aperture is F8 or F11. Small digital DC depends on the specific model, if the optional aperture value between F2.5 to F8, the middle of the F4.6 for the best aperture. If the time is like water, the lens aperture is the faucet, it controls the size of the water (into the light). For the lens of course, we hope that the aperture of the bigger the better, it is like the taps at home, although we usually wash your teeth never wash it open the largest, but if one day home fire, we will immediately screw the maximum, and Hate why did not have a big point of the faucet. A lens is the largest aperture imaging is not good, usually we generally use the largest aperture; but in the special low light and not allowed to use the tripod case, such as the night of the street documentary capture, we will not hesitate to use the maximum aperture, And regret why did not buy a large aperture lens. But the price of a large aperture lens is very expensive, the weight is amazing. For example, there are two versions of Canon70-200mm, aperture F4 price of 4,000 yuan, weighing 700 grams; aperture for the F2.8 that a price of more than 8,000 yuan, weighing 1500 grams. This is because the aperture level, the lens is much larger, processing difficult. It is worth the first-class aperture to pay twice the money and weight of the sweat, this is a matter of opinion.

Q:What is the use of SLR camera lens?

Because the greater the optical zoom factor, the greater the impact on the imaging, so the general SLR zoom zoom are relatively small, in order to adapt to different focal lengths, the focus of the segment made of different lenses, such as 18-50,50-100,100 -300, etc., called the small focal length wide-angle lens, used to shoot the scene of the scenery and tall buildings, large focal lengths called telephoto lens, telephoto lens according to the different focal lengths and a small telephoto and long telephoto

Q:The world's most famous three digital camera lens is what

1, Carl Zeiss lens; Carl Zeiss lens is from Germany's brand, is currently one of the few non-Japanese manufacturers. Karl Zeiss is a very long history of optical instrument manufacturers, the production of the lens in the traditional camera field has always been a "noble" synonymous with many photographers to have Carl Zeiss lens proud.

Q:Canon SLR camera lens is a bayonet? Can you use a domestic lens?

Canon SLR camera is bayonet - Canon EF mouth. Canon SLR camera from 1987 to EF card mouth, only Canon 1987 after the production of EF mouth or deputy factory production EF mouth lens can be installed directly. Even Canon's own lens, if it was produced before 1987, non-EF mouth of the lens, can not be directly connected to the Canon EF bayonet camera body. China's domestic production of all previous SLR lens, there is no one EF card. China's production of SLR cameras only Phoenix is used PENTAX PK bayonet, that is only only Phoenix SLR lens can be used in the Pentax body.

Q:My Sony digital camera lens can not play out, how do?

Your camera's lens but not out on the two possibilities ~ ~ the first lens with a bad lens can not be powered. The second is inside the lens into the dirty things such as sand stuck lens gear. The You first wipe the lens by hand and then use the ears to listen to whether there is no sound inside the repair