DSLR Lens Principle Okay, what does a DSLR lens do to the camera

500d I use this.

550d pixel high point, the focus seems to be better, it is definitely better than 500d, but it is more expensive, and you can bear it if you want to buy it.

18-200, the focal length is complete, I have used it, it is not bad, it can meet the general requirements.

If you want to match it, I don't know if your 6000 has a lens body, or just a lens.

6000 lens with body: completely unnecessary, because when you go out of the body, the remaining money to buy a lens is not as good as 18-200

6000 only lens: recommend a few Tamron 70-200 with sharp imaging and large aperture.

The Canon 70-200 f4 has excellent imaging.

The reason is that considering your price and the lenses you already have, these two are very good, 18-200, although this focal length is included, but the imaging after 100 is not very good, and the wide-angle end is good.

Another suggestion is to spend more money on the bull's head.

500d real user feelings

I burned all the way from 500d+18-200 to ......

How does a DSLR lens work? Aren't you, this is the application of complex light refraction and special lenses.

I guess you're asking about a DSLR, right? Light (i.e., the scene, the scene seen is originally the reflection of light) enters the lens, corrects through the refraction of the lens, etc., and hits the reflector. The reflector itself is an image sensor.

CMOS or CCD or something. Above is a pentaprism. The combination of a pentaprism and a reflector allows the lens image to be displayed in your viewfinder through a special focus plate.

When the shutter is pressed, the reflector pops up, the curtain that covers the outside of the image sensor shrinks, and the light hits the image sensor, and the process of recording the image is a digital high-tech ......I don't know... That's it.

The role of a DSLR lens is to both photograph and frame through it. In this way, the degradation of ** quality caused by parallax can be fundamentally solved.

Moreover, when framing with a DSLR camera, the object to be photographed will appear very clear, and it will be reflected on the focusing screen by the oblique ground mirror, and then through the reflection of the "roof prism" with a ridge at the top, the photographer can see the scene through the viewfinder eyepiece, and it is the same image as the scenery up and down, left and right, so it is very convenient to frame and focus.

The lens is focused on the CMOS image sensor chip, not the CCD

A difference of more than 3,000 is not much worse.

The quality of the image depends on the lens Generally, SLR players rarely buy a set of lenses, and the lens is the key to imaging.

It has a big impact! It can be said that the quality of imaging depends largely on the lens, not the body. It's just a sensor in the body, and the difference between the sensor of the same size is very limited, and the gap is in the lens!

There is a world of difference between a good shot and a bad shot! Of course, another very important element of a lens is the focal length and aperture, the focal length determines the angle of view, and the aperture determines the amount of light transmitted (a large aperture can maintain a high shutter speed in low light). DSLR due to the interchangeable lens, the lens selection is very rich, taking the Canon EOS system as an example, the widest has 14 ultra-wide angles, the longest has 1200 white cannons, and the large aperture is also quite a lot, such as 24 , 35 , 50 , 85 , 200, etc., which is quite powerful.

The body determines the pixels, and the lens is equivalent to the eye, shooting the image.

A good lens provides a sharp, vivid image of the body, accurate colors, and correct geometric proportions. The body should be able to record with quality and quantity, which is the relationship between the body and the lens.

In terms of the responsibility of the camera body and the lens, it is generally believed that the lens plays a greater role in image quality, accounting for about 65%. For example, if you buy a set of cameras for 10,000 yuan and have a body for 3,500, you need to match 6,500 lenses, not upside down. But in order to make money, stores often induce you to induce you upside down, so a good lens is a necessary condition for a good DSLR camera.

For example, no matter how good your ears are, the audio equipment at home is very bad, and you can't hear good sounds. On the contrary, the equipment is good, but it is half-deaf and useless. So the body and lens have to be good.

Pixels are determined by the body, but the number of pixels is not the only factor in the quality of the camera, this is a topic that manufacturers take to the layman, the same number of pixels, the quality of the image sensor, the size of the frame, all play a key role in the quality of imaging.