Q:Is it possible to wipe the camera with a cotton swab dipped in alcohol?

A little better lens surface coating, technology content is relatively high, the role is also more obvious, and the lens is different, the coating is also different. It is best not to use alcohol and other chemicals to wipe, in order to avoid damage to the lens coating, and change its characteristics, affecting the shooting effect. Since you can think of wiping the lens with alcohol, that you still love the lens. Although the lens is fragile, but not so squeamish. Dirt heavy, the general lens cloth or paper, Kazakhstan gas after the light enough, a little extravagant charcoal pen. Usually the kind of dust and so on, the air blown clean on it.

Q:Nikon camera lens shows how the memory card is locked is going on

SD card has a LOCK to the other side on it.

Q:SLR camera lens focal length problem

70--200 refers to the focal length, focal length from 70 to 200. The larger the focal length, the more farther you can. Travel, if you shoot the scenery is still wide-angle, that is, the focal length is small, such as 18,24 and so on. So the scene is big.

Q:What is the camera lens servo

Camera lens is the most important part of the camera, because it directly affects the quality of shooting imaging. At the same time the lens is divided into the camera type and grade of one of the most important standards.

Q:SLR camera can take two shots?

No. Because the bayonet specifications are the same, can not dock. Metaphor, the lens is a screw, the camera is a nut, two lenses is two screws, two screws can dock it? Unless you do yourself in the middle of a transfer ring, it may be possible to succeed.

Q:Canon camera lens cleaning

4. Remove the stubborn stains with a lens cleaning solution (with caution) The lens has oil or fingerprints, blowing, brush are invalid, it is necessary to use a very soft clean cotton swab (or mirror paper) stained with a little lens water gently wipe. It is not recommended to use lens cleaning solution, cleaning fluid is often used, will wash away the coating. On the other hand, the cleaning fluid in the dry when it is inevitable and then stained with dirt.

Q:On the Canon camera "lens error, please restart the camera" problem?

3, gently tapping the lens or to force, not too hard, the lens inside a small card astringent foreign body can be eliminated! 4, the above can not be resolved that is a permanent fault, such as transmission gear, track and other jam has to repair

Q:SLR camera can be installed at the same time two or more lens, is the two superimposed and then what

Inverted lens or telephoto lens This is a special use, the real lens for optical imaging is still only one, because these special adapter ring, polarizer a variety of low-pass mirror, filter, etc. or must rely on a pure Of the optical lens to use.

Q:Ask the master to introduce SLR lens camera focus principle?

3, focusing means ????Canon in the AF era, there is a big thing, that is, change. FD before the direct abandonment, replaced by the later EOS mouth. EOS mouth is the biggest feature of all-electronic contacts. Because there is no transmission structure, so it uses a lens motor. Here we classify the focusing means. ????(1) body motor. Body motor is installed in the camera body inside a motor, through the fuselage signal, direct the motor rotation. The fuselage bayonet has a screw cap like a small one-shaped mouth, the lens with a screwdriver with the same knife, the lens hit the fuselage when the body of the screw cap is a font with the lens Screw knife the same knife match. The power of the fuselage motor through the lens screwdriver linked to the lens inside the multiple transmission structure, and finally command the lens of the focus lens before and after the move. As early as the Minolta, Nikon, Pentax are this way of focusing. ????(2) lens motor. Before that Canon switch, because the eos mouth no drive screwdriver, only the transmission of electronic signal contacts, so Canon put the focus motor to the lens. The body only need to issue a drive command, the lens motor can be rotated by instructions. At present, everyone has a lens of the lens. The difference between the two focus means is obvious. Body motor do not know why, the sound is very large and the lens motor sound is very small, the fuselage motor due to the cumbersome transmission structure so the focus speed is relatively slow and the lens motor is generally faster, except for low-end lens motor. Lens motor as the motor itself to take up the volume, so the general lens of the lens head is relatively large. But for the average user, are enough, in addition to the sound outside the sound is not much difference.

Q:Nikon how to change the lens

And then put the lens to pick up the lens to be replaced, the lens at the red on the camera mount;