Q:When taking pictures with a normal camera, it is not easy to use. There is a "fool" camera,

Early camera because there is no auto focus function, focus need to manually, but encountered unexpected events is too late to tune, so the use of the camera's so-called "super focal length" to shoot, then the camera and the lens will generally have depth of field Table tips.

Q:What is the picture quality of the camera lens? Is the clarity of detail?

In the past I also use 18-135,60D kit. Now upgraded to full-frame with 24-70 second generation and 70-200 second generation, the weight suddenly increased a lot, what is the increase? A closer look is actually not much improvement. 1, the aperture becomes larger, this is very important, in the case of low light, there are cases using the flash, there is a big aperture really can bring good results;

Q:SLR camera protection lens called what

Uv mirror is used on the film camera for filtering ultraviolet rays. UV has an effect on film. But the ultraviolet light on the digital camera has no effect. So add a uv mirror digital camera, in the imaging will not be affected. But also in front of the lens more than a layer of lenses, to protect the lens of the original lens. Uv mirror no need to buy your dozens of dollars can be a piece of money.

Q:Vivoxplay why the camera failure, can not connect the camera lens

3, if the mobile phone system is not the latest, the phone upgrade to the latest version of the try, you can enter the settings - more settings - system upgrade - check the update immediately, according to the prompt to download the upgrade package, click check and install, Restart automatically enters upgrade mode.

Q:Camera lens on a small amount of dust is not a little impact on the quality of imaging?

If the lens is not much dust, can not ignore him Do not listen to people say, to buy something that is not cheap to come back to rub, as the lens is not good If the camera is UV mirror before the dirty, it does not matter, can change one Lens words, alcohol rub, the impact of the lens may be smaller, but can not rub, absolutely not rub.

Q:What is the difference between a built-in lens and an external lens for a digital camera?

Fixed lens is generally used on a fool camera, usually zoom lens, small size, light weight, quality in general, the aperture is not, everything is dry, so dry. Is to meet the home ~ Exchangeable lens is not the same, although the volume and weight are not small, the price is also expensive expensive. But its optical quality and then how to say it will be better than the fixed lens ~ Moreover, it can be different for the subject matter of the film, each category of the lens will be based on the theme of the shooting features to optimize. Such as ultra wide-angle, fixed lens camera no matter how wide but wide camera wide-angle lens ~ for example, macro, fixed lens camera even if the paste does not have a dedicated macro lens in 30 cm away from the big ~

Q:NIKON D90 camera how to take the lens

NIKON D90 SLR camera to remove the lens is not trouble. Press the lens lock button in front of the camera, press the camera while counterclockwise direction, SLR camera lens was successfully removed from the camera. Tip: Remove the lens after the replacement method, put the lens to pick up the lens to be replaced, the lens at the red on the camera bayonet, and then clockwise twist the lens, know that heard the sound, this Description has been successfully replaced the camera lens

Q:SLR camera lens how to see the model to identify the quality

Canon red circle, Nikon gold circle, this is just outsiders to see. Now out of the APS-C frame of the lens is no red circle, only full-frame lens has For example, 17-55 lens, you can say less than the red circle of 17-40? But the former aperture is 2.8, the latter is 4, look to see it.

Q:What is the function of the wide-angle lens of a digital camera?

The main parameters of the optical lens and evaluation of the main parameters are focal length, field of view, object distance, aperture, shutter and so on. The most perfect evaluation of the lens than the MTF (Modulation Transfer Function). However, due to aberration (calibration reasons), each range of the lens has an MTF value. These ranges refer to: (1) the paraxial portion, (2) the off-axis portion, and (3) when the optical system has an asymmetric distortion, the two parts are sub-sections in different directions. Each part has its own corresponding MTF value for different radiation energy wavelength ranges. MTF is the most commonly used and optimal index of the imaging system, and it is also the optimal index to guide the integration of machine vision system. ????In the shooting of the distant movement scene, play a key role is the camera shutter speed, which is closely related with the composition, such as children, walking the characters generally more than 1 / 125S can, if the high-speed sports Of the images such as cars and other general in the 1 / 500-1 / 2000S, in general, to be able to shoot the angle to decide.

Q:Can I clean up the lens inside the SLR camera?

Even if the clean out of the living body, no longer developed, but the coating will also leave traces. Now the photo studio will repair the lens is not much. Of course, can find the repair will be the master, But the lens if the open, and then loaded back is not easy. First, the assembly accuracy, and second, the dust-free environment is not easy to achieve.