Digital camera pixel problem, DSLR camera pixel problem

What does the size of a digital camera's pixels mainly affect?

Definition! Is it that the larger the pixel, the sharper it is?

No, if the 5 million pixel camera and the 800W camera are both washed out of the 4-inch **, then there is actually no difference in imaging quality.

But the 800W pixel washes out the largest**, of course, clearer than the 500W!

What is the difference between an 8-megapixel camera and a 12-megapixel camera?

It's like I said above, it depends on the size you want!

Is it okay for an average home camera to have 8 million pixels?

Of course!! Generally, 500w is OK, for the average family, but now due to the progress of the times, the pixels of the machine are higher than the other, and the 800w pixels are enough for the average family!!

Canon SX100 10x zoom How about it, have you ever had a friend?

I haven't used this one, but now the camera is generally higher than the other, and the zoom is larger than the other

This camera is manual and multi-functional.

Overall it's ok

If you like it, buy it

This is not necessarily, the pixel only determines the size of the printable, and the clarity is related to the lens, sensor, and image processor, for example, it is also 8 million pixels, you can just look at Canon and Patriot.

I'm going to give you my opinion.

First of all, it is certain that there is a correlation between pixels and image quality. However, there are many factors that determine image quality: CCD size, CCD resolution, camera processor, lens accuracy, and even the light when shooting, the sensitivity of the camera, and image stabilization will all affect the quality of the image.

And each of these can be decisive factors in extreme cases.

If you pursue quality, then the small digital is definitely not the opponent of the SLR camera. Since you have a home camera, don't deliberately pursue pixels. Generally speaking, small numbers,Their actual pixels can't reach what he marked.,Most of them are imaginary pixels calculated by expanding the original pixel up and down, left and right.,So,Don't pay attention to pixels.,Whether it's a Patriot or a Canon,Their maximum limit of flushing is only 12 inches.,No matter how big it is, there will be leaks.。

For any digital camera, pixels are not the most important thing. A good lens can be worth an extra 5 million pixels. No exaggeration.

For example, my D80 has only 10.2 million pixels, but I dare to pack the ** of the ticket to shoot is much better than the 12 million pixel card machine.

When it comes to DSLR, there are many factors that go into the image, and pixels are just one aspect. It's also about the lens, it's about the image engine, it's about the compression algorithm.

For example, the two you mentioned must have good imaging quality of 550D, 550D is advanced entry-level, and D5000 is pure entry-level. The gap in the image engine is still relatively large.

So in fact, there is a very big difference between the cameras and lenses of N and C, that is, C is soft and N is sharp. That is to say, the things that come out of the N family are very clear, this is not to say clearly, in many cases, the image can not be too clear, "the water is clear, there is no fish, people are not in vain, and the camera is clear, no one shoots", imagine if a camera can reflect any flaw on your face very clearly, no matter how much makeup can be seen through at a glance, then it is interesting......In fact, many photographers want to add a diffuser when shooting portraits, just to hide these things, not to mention that the effect of soft portraits is very good.

To give a simple analogy:

Which one is better for a 5-megapixel mobile phone to shoot vs a 5-megapixel camera?

You have the answer, right......

Pixels are just psychological comfort.

Play DSLR, don't focus on pixels. Unless you're doing a commercial and need an extra-large print format.

**Clarity is related to the image sensor, lens, and pixels.

The resolution is multiplied equals pixels of 4k 2160p screen, which only requires 8 million pixels.

Of course, but depending on how you take it, sometimes the lighting is not good, and the ** photo is not as good as the mobile phone photo, and the camera settings.

Pixels do not determine the quality of the image. High resolution is good for photographing and viewing on a computer.

This is just one of the parameters, as well as the aperture, the material of the image sensor, and the camera technique. It's all about the effect of the shot. As a very simple example, you can take a domestic machine and a machine with the same pixel produced in an island country and shoot the same thing.

You'll be able to see the difference.

The size of the number of pixels only determines the size of the printable size, not the sharpness. Theoretically, the printing resolution that the human eye can recognize is 300dpi (that is, 300 dots per square inch), and the human eye cannot distinguish anything greater than this value, so there is no point in setting the ** higher than 300dpi resolution. For example:

Print a 5-million-pixel strip at 300dpi with a maximum printable size of 12 inches. If it's bigger, the pixels will be enlarged and you'll feel very rough. And printing 10 million pixels**, you can hit 24 inches.

That's the way it is. The key factors that determine whether a picture is clear are: the quality of the CCD sensor of the camera + the quality of the lens + the performance of the processor, as well as the factors of the photographer - accurate focus, stable holding of the camera, accurate focus, accurate sensitivity, accurate white balance, etc.

Pure high pixels make no sense.

Episode 31 The higher the pixel of the phone, the clearer the shot**?

There is a direct relationship between resolution and effective pixels, and the actual use of pixels directly determines the resolution of the picture. Pixels and resolution are two important concepts that are inseparable, and the way they are combined determines the amount of data in an image, and the higher the resolution of an image of the same size, the more pixels it contains.

Resolution refers to the horizontal and vertical resolution of imaging, and resolution is an actual physical size; Pixel refers to the physical pixel value of the camera's optoelectronic equipment (CMOS), that is, the ability of the material; Valid pixels are the pixel values that are actually used.

Ways to improve image quality

1. Reduce ISO (sensitivity plexus).

In order to achieve the ultimate image pursuit, the SLR should not exceed 400, and the mirrorless and flagship DC should not exceed 200.

2. Accurate**.

The maximum preservation of light and shadow information means that the light and shadow information of any Qi Zheng Mo element in the picture should be left in the picture, rather than accurate for the shooting target, that is, the brightest place is not exposed, and the darkest place is not black.

3. Be cautious about the limit of the wood.

This range is very wide, such as the maximum aperture lens, it is recommended to open the maximum to use, the highest ISO6400 body, it is recommended to open up to 1600, the farthest 200mm zoom, it is recommended to adjust the maximum to 180mm, at the same time, because of the diffraction phenomenon, the digital camera should not be adjusted to such an extreme value when opening the minimum aperture. Because often the image quality is relatively poor in these extreme states.

The reason is simple.

For example, the pixel of camera A is twice as high as that of camera B, so if you shoot the same scene and print it with the same resolution, the ** printed by camera A will be twice as large as that of camera B, and the details you see on the big ** will naturally be clearer. It's like if you look at ** with a magnifying glass, it is easier to find the flaws on **.

If the pixel is high, the size is large, which is the most direct advantage.

For the big **, you can take a screenshot of some of it, and still have enough pixels for you to use. For example, a large ** can be enlarged to 20 inches, and you can cut a small piece of it, and it can also be printed as a 5-inch standard** without enough clarity.

If the sensor area remains the same, a high pixel density means a high pixel density. High pixel density can interfere with the signal and reduce image quality (especially high sensitivity), so pixel density has its limits due to technical limitations. Of course, with the development of technology, this limit is constantly being surpassed.

Pro, which means that the pixels are too large, as long as there is a little out-of-focus, ** will be pasted, the safety shutter refers to the lowest speed of the shutter that will not be pasted, if the camera is too high, the safety shutter speed will become high. For example, a shutter speed of 1 60s is a safe shutter for a normal SLR, but it may be pasted for a high-pixel SLR

Did I make it clear? If you don't understand, you can ask for it, and if you understand, you can ask for adoption

How can a large pixel area perform well? The sampling output of a pixel only shows its average brightness, and if there are fewer sample points, is there still any detail? If the pixel is large enough for a face, then the face of ** is just a point of light.

Pixels determine the resolution of **, the more pixels, the clearer the details.

Hello! Pixels only determine the format size of the output**, and are not the main condition that affects the image quality (including sharpness), nor is it the main factor in choosing a digital camera.

First, let's take a look at the relationship between pixels and size:

3R, 4R**3 million is enough;

Printing A4 format ** will cost about 5 million;

Printing or spray-painting A3 or more (with the size of a wall calendar)**, 8 million pixels are enough;

12 million pixels is enough to print or print A1 or more (A1

594x841

mm）**。

It can be seen that if it is not used in the advertising industry, the ** of 10 million pixels has exceeded the needs of home use.

If the area size of the sensor is fixed, there is a certain limit value for the pixels, and if this limit is exceeded, the sensor is prone to adverse effects such as electronic thermal drift, which will lead to a decrease in image quality.

The image sensor (CCD) used in home digital cameras is currently only about 1 inch in size. At the current level of manufacturing technology, it is appropriate to design a CCD with less than 1200W pixels on a CCD of this area size. Some of the new models have been upgraded to 1500W pixels, which is already starting to exceed the pixel capacity limit of the CCD.

- On the other hand, there is a possibility that "electrothermal drift" may occur, resulting in increased noise and decreased image quality.

Therefore, it is neither necessary nor wise to blindly pursue high pixels.

At present, there are more than 3,000 top consumer models on the market, such as Canon's G series and Panasonic's LX

series, the image sensor is about 10 million pixels.

-The aim is to pursue high image quality.

First of all, this statement is true.

Secondly, the high-pixel camera has two purposes, one is to facilitate the use of professional workers to zoom in, or to see the details, they do not have high requirements for high sensitivity, but this is also the high pixel of high-end cameras.

The second is aimed at ordinary consumers, suppressing competitors, appearing to be more technologically advanced, usually cheaper cameras.

Whether you can shoot stars and moonlight at night does not depend on the number of pixels, but on whether the shutter supports a slower ** time and whether the aperture supports a larger aperture. Usually there are special preset shooting modes in the camera that you can select. There is usually an icon of "star" or "moon" inside, which represents the night scene.

Because the light at night is relatively insufficient. Therefore, if you want to capture the effect of stars or moonlight, you need a camera with a minimum of 5 seconds and a minimum aperture. Most DC digital cameras don't get good results because you can't manually adjust the shutter and aperture.

The larger the aperture (the smaller the number), the more light comes in, and the shutter will be slower, which means that the near light can last for a better time.

**Effect. It is recommended that you use a camera that can be determined by shutter, aperture or completely manually. You also need a tripod, otherwise 5 seconds or 15 seconds**, a little movement, the image will be blurry.