What are the pixels of the camera?

Question 1: What are the pixels of a general camera? Mobile phones and cameras are not as good as the best mobile phones, and the best pixels are not as good as the worst cameras. The effect of mobile phone and camera is incomparable. The highest pixel of a mobile phone may be 800W, which is actually impossible to achieve ... Anti-shake is electronic anti-shake zoom or optical zoom. A flash is not a flash, but a small bright light bulb. Generally, mobile phones with pixels above 800W are junk brands ... Some big brands don't have that many pixels at all, such as Sony, Nokia, Motorola, LG Siemens, and the highest is 320W and 500W W, and mobile phones don't pay attention to camera lenses, but only have additional functions. Generally, big brands don't pay much attention to this. Generally, they pay great attention to the quality of mobile phones. Some are inferior products. The pixel ratio of brand mobile phones is said to be 200W, which is not as clear as that of 130W of big brands ... For example, Nokia N70 and Tianyu's mobile phones both seem to be 320W, and the photos taken are incomparable. The N70 seems to be 20 times electronic zoom, and Tianyu's is 4 times ... The lens is different ... The camera lens is different from the mobile phone lens. ! Now the highest pixel of the camera is still uncertain! Some cameras can reach millions of pixels. This is what is displayed on the satellite .. General household 600W800W100W110W120W is the most common one. Sony and Samsung usually have them. If you play by yourself, it's good to buy a brand camera of 7800 yuan, which is already very clear ... more than 2300 yuan to buy a Sony1200 W. This is necessary .. If the professional has 5000W pixels, I think it's a Sony worth 5W yuan .. That camera is really good. ..

Question 2: What are the pixels of a SLR camera? Pixels only represent the resolution of the photo. Does not represent the picture quality.

It doesn't mean much.

Now the best mobile phone configuration, the picture quality is not as good as 1000 yuan stupid card machine.

There is no comparability between mobile phone and SLR.

18 megapixel mobile phone can't enlarge and print the photos very well.

A few years ago, the 8-megapixel card machine took photos and enlarged them, which was very clear.

In short, the root cause is determined by the size of the camera's photosensitive element. The bigger the better.

Question 3: What are the pixels of cameras and camcorders? There are changes in this different time period. At present, the cost of the camera is more than 8 million, and100000-150000 is more suitable; Cameras don't have high storage requirements, and more than 2 million is almost the same.

Question 4: How many pixels is a good camera? The landlord asked a very professional question, which is difficult to answer.

1 and number of pixels are closely related to the number of pixels per inch. If the pixel per inch is too high, the signal-to-noise ratio will decrease and the picture quality will be impure. For example, some 1/2.3 area sensors use 1800 pixels, and the pixels per inch is too large. Once the picture is enlarged, it is terrible, so the pixel per inch should not be too high. The reason why manufacturers develop high-pixel card machines is not that they don't know the harm of high pixels, but just to cater to consumers' taste for high pixels, which is just a marketing tool;

2. The number of pixels is closely related to the imaging details. Pixels are directly proportional to the resolution, and the higher the pixels, the richer the imaging details. For example, the 36-megapixel Nikon D800 and the 36-megapixel Sony A7R are invincible in landscape shooting, and the imaging details are very rich. Therefore, high pixels can create high image quality without reducing the signal-to-noise ratio. Of course, high pixels have higher requirements for shooting, and the side effects caused by slight jitter will be amplified. For example, if the D800 and A7R don't use tripods, they will have a great chance of blurring the line of sight. Therefore, high pixels inevitably require a gesture of prohibiting shooting. You don't need a tripod to sweep the street, but high pixels are not good. At the same time, because high pixels are closely related to imaging details, the resolution of low pixels will be greatly reduced, and imaging details will not be as rich as high pixels;

3. Pixel per inch is closely related to signal-to-noise ratio. Digital imaging is also electronic imaging in a sense (of course, there are optical factors). Sensors are the core of digital imaging, and sensors are electronic products. The sensor will produce thermal noise in its work, which is the so-called noise, and the pixel height is useless; The smaller the point, the more thermal noise it produces; The lower the pixel, the larger the unit pixel and the less thermal noise. Therefore, the image quality of low pixels is purer but less detailed, while the image quality of high pixels is more noisy but more detailed, so the pixels must match the area of the sensor, that is, the pixels per inch should be just right. And how to get the right pixel per inch, the business is a secret, users can only understand it, and it is difficult to understand it in simple language;

4. The number of pixels is better, which is closely related to imaging indicators such as pixels per inch, signal-to-noise ratio and resolution. It's more like a 4X4 relay race, which is interrelated, interdependent and indispensable. If you have a teammate like a pig, three Liu Xiang are useless;

5. According to the experience of camera players, loosely speaking (rigorous conclusions must be evaluated in the laboratory), in full-frame cameras, the average user's camera pixel is about 20 million, such as Canon 5D3, Nikon D6 10, Sony A7, etc. , taking into account the imaging details and high noise, more balanced. Nikon DF uses16 million pixels, and the picture quality is very pure. For professional users, 36 million pixels is better, with rich imaging details and better image quality, but it needs a rigorous shooting attitude, such as using a tripod to prevent jitter, using a high-resolution lens to ensure resolution, and using a relatively low sensitivity to prevent high-sensitivity noise. If a 3600-pixel camera is used for sweeping the street and other imprecise shooting, the picture quality is not good and it is easier to paste, especially after enlargement.

6. In a half-frame camera, 6.5438+0.6 million pixels is reasonable;

Among 7.4/3 format cameras,12 million pixels is more reasonable;

8. In11.7 format camera,100000 pixels is reasonable;

9. 1/2.3 format camera, 8 million pixels is reasonable;

10 Of course, all the above are normal, but there are exceptions. For example, Sony RX 100 embeds 20 million pixels in the sensor of 1 inch, and the image quality is also very good, thanks to Sony's technical strength in developing sensors. This is a case, this is high-tech, and ordinary manufacturers don't have this technology.

The answer is not very rigorous, but the general idea should be correct.

I hope it will help the landlord.

Question 5: The number of pixels in digital cameras is generally good. Choosing a camera with high pixels depends on the purpose. Even at home, different people or at different times will have different uses, so I will talk about common ones for your reference.

1, look at it on the computer. The number of pixels of a display with full HD resolution of 22 inches or more is1920×1080 = 2073600 (a little over 2 million). So chinafoxana's friend said 3 million is enough. Online photos don't need to be larger than the whole screen.

2. develop the photos. There are many 5-inch ones and many 7-inch ones at home. 7-inch photo, more than 3 million pixels is really enough. The larger the photo area, the more pixels are needed. In my opinion, it is usually enough to develop small ones. Sometimes we also want to develop some photos into large ones, so we need to leave some margin.

3. If you want to edit an image, the purpose of editing is different, and the requirements for the number of pixels are also different. As long as you don't print or spray, the requirements are not high.

Nowadays, most new camera products, even low-end products with low prices, are above100000 pixels. Therefore, it can meet the requirements of household for the number of pixels. In other words, you don't have to consider the number of pixels when you buy a camera.

What performance is the main consideration? What's the difference between high-end and low-end cameras?

Different cameras, although the number of pixels is the same, have different imaging effects (or look clear). Cheap cameras, lenses and photosensitive imaging components are even worse. In addition, in the case of insufficient light, the imaging particles of cheap cameras are rough and fuzzy. Imaging effect is an important factor that should be considered.

What do you think of the effect? My own experience is that after taking a photo, I input it into a computer with a liquid crystal display, look at the picture or edit the image with software, and display the pixels of the photo one by one. This is when the image is clearest. If the image is reduced or enlarged, it will become unclear. Commonly used software for viewing pictures is ACD SEE, and software for editing pictures, such as Photo shop, has the function of one-to-one display. If you are familiar with these softwares, it is easy to compare the effects of various cameras. If you are familiar with these softwares, you can't just look at the effect on the camera viewfinder (usually a small LCD screen). Some cameras actually have a good imaging effect, but this viewfinder has a bad effect, which is the case with low-end Canon cameras. Some cameras, such as Samsung, look good on the viewfinder of low-end cameras, but the actual imaging is not that good. I also found that Fuji and Olympus often have this situation.

Through the examples mentioned above, we can also see whether the effect is good or not, and we can't just look at the brand. Not all famous cameras have good effects. If it really can't compare with the effect, I think I can only recognize the brand. To tell the truth, I only sell cameras. Canon's products are mostly divided into high-end and low-end, and the effect is better than other brands.

The factors that affect the effect are anti-shake and so on. If the anti-shake performance is good, then the requirements for stability are lower when taking pictures with the camera, and the images taken are not easy to appear holes, that is, it is easy to take clear photos.

There are also two important performance parameters to be reminded: wide angle and zoom factor. A wide angle allows you to take a wider range in a narrow situation, and a large zoom factor (telephoto) allows you to take a larger picture of a small object in the distance (for example, there is a beautiful bird in the distance, you can't take a clear picture at a distance, but if you get close to it, it will fly).

In other respects, I don't think we need to think too much or work too hard. Of course, if you have this hobby, you can find more relevant information online.

Question 6: How many pixels is the best for a digital camera? Problems that novices should pay attention to when purchasing digital cameras Many friends will encounter a dilemma when purchasing digital cameras. Don't worry, and make sure that after reading it, it will be clean and refreshing, and no longer embarrassing!

The first measure: good attitude! If cameras with similar prices and functions are famous brands, the actual performance difference is very small. There are no super cheap and super good goods in the world. Never compare a 1000 yuan camera with 2000 yuan! Otherwise, I'm exhausted and I can't choose!

The second measure: have some basic skills!

1. How high is the effective pixel?

Home camera, 5-8 million, is an inexhaustible effective pixel. There is no special relationship between pixel height and imaging clarity! Remember: too high a pixel will only waste your storage resources!

What is the size of 2.2? CCD？ Theoretically speaking, the larger the CCD size, the better the light collection effect, the more information recorded in the picture, and the richer the details retained, so the image is more perfect and beautiful. For home cameras, you don't need a large CCD, a camera with 5-8 million pixels, and 1/2.5 inches is enough.

What's the difference between optical zoom and digital zoom? Optical zoom is a true pixel, while digital zoom is at the expense of photo quality. The more you use it, the greater the loss, so in the actual use process, digital zoom is hardly used.

4. How far is the optical zoom? The focal length is not the ultimate goal, the most important thing is the focal length range covered by the lens. Generally speaking, the medium focal length (85- 135mm) is suitable for shooting people, and the wide-angle lens (18-40mm) is better for shooting landscapes and buildings. For home cameras, 3-5 times zoom is enough.

5. Is manual work really that useful? In fact, there is absolutely no need for home users to choose a digital camera with full manual function, because the probability of actual use is very small, and now many cameras are equipped with the function of using more humanized scene mode. Once the full manual function is locked, there is little room for choosing a camera.

6. How big is the screen? Now the screen of the camera is getting bigger and bigger, but the cost is very high. Finally, people who want to buy a camera pay for it themselves! In addition, the big screen consumes a lot of power! If the home is suggested, everyone will be satisfied with the screen of about 2.5!

The third trick: know a few things.

Remind everyone that cameras are used to take pictures! Not for decoration and playing as jewelry!

How much money are you willing to invest in buying a camera is also a very practical problem, which is directly related to the choice of camera. The choice of household cameras is generally the most practical under 3000 yuan, and it is also the mainstream price of civil cameras.

Question 7: How many pixels does a digital camera need to count as 1? Up to now, Hasselblad H6D- 100c pixel is the highest in the domestic field, 1 100 million pixel; In the professional field, the highest pixel of the camera is the Swiss Seitz camera, with 65.438+0.6 billion pixels; In the field of national defense science and technology, the Pan-STARRS astronomical camera system of MIT has the highest pixel, with 65.438+0.4 billion pixels; Of course, this does not include cameras in the military field with high security level;

2. Pixel is absolutely proportional to resolution. The higher the pixel, the higher the resolution, which means the larger the size that can be enlarged.

3. Pixels are directly proportional to sharpness. The clarity of digital imaging is closely related to the signal-to-noise ratio of sensors, lens quality and image processor technology. As far as pixels are concerned, pixels are photosensitive spots built on sensors. On the premise of the same pixels, the larger the sensor area, the smaller the pixels per inch, the larger the area of a single pixel, the better the photosensitive performance, the better the signal-to-noise ratio index and the better the definition. On the contrary, the definition will be worse. Therefore, the higher the pixels on the sensor, the lower the density and the higher the definition, while the higher the pixels on the sensor but the higher the density, the worse the definition;

4. "How many pixels are good?" Everyone's standards are different.

First, different magnifications require different pixels. For example, a large commercial photo (above 5mX5m) needs at least 20 million pixels to support, while a 7-inch photo at home has more than 4 million pixels, and the extra pixels cannot be developed;

Second, different carriers need different pixels to display photos. There are generally three kinds of digital display carriers at home, one is computer monitor, the other is digital photo frame, and the third is TV. Among the popular home display carriers at present, 1920X 1080P display needs more than 2 million pixels to display photos perfectly (one photosensitive element on the display corresponds to one pixel, and 1080P only has more than 2 million photosensitive elements, which can only display more than 2 million pixels, and the extra pixels cannot be displayed on the display, which is invisible to human eyes); The 4K display of 3840X2 160P needs more than 8 million pixels to display photos perfectly. With the development of the future, the emergence of 6K, 8K or even higher resolution displays requires higher pixels.

Thirdly, because the photos taken may be artificially cropped for some reason, the pixels needed are different. Assuming that the information of the photos is evenly distributed in the photos (actually, it is uneven, with more information in the center), half of the photos with16 million pixels are cut off, and the remaining half can still be perfectly displayed on the 4K display; Assuming that the photo taken is a panoramic photo of a person, if only 10% of the picture is intercepted and viewed on a 4K display, the photo taken by Hasselblad H4D60 camera with the second highest pixel is still insufficient and cannot be displayed perfectly.

5. Because the sensor area is generally fixed, among domestic cameras, the highest-end is the medium-frame camera, the high-end is the full-frame camera, and there are more half-frame cameras. Others include 4/3 inch sensors, 1 inch sensors, and the lowest 1/2.3 inch sensors. The definition of imaging must consider the ratio of sensor area to pixel number, which is the basic theory in digital imaging, namely signal-to-noise ratio theory. On the basis of ensuring the number of pixels needed to display photos or enlarge the size, the higher the signal-to-noise ratio (the smaller the number of pixels per inch), the better the definition, and the higher the total number of pixels, the larger the enlargement size. "How many pixels are good?" Can be determined according to their own needs;

6. "How many pixels are good?" For ordinary families,160,000 pixels is more than enough for photos of 4K display devices as long as the photos taken are not easy to be cut off. If you like to cut a part of the picture to enlarge it (commonly known as counting hair), the higher the pixel, the larger the sensor area. If it is only pixel high and the sensor area is not large enough, the effect of counting hair is still not good.

Question 8: How many pixels are enough for a general household digital camera? Canon is good, Canon is a professional brand, Sony is a layman, Canon is the only professional digital camera brand that has entered the world's top 500, and Nikon does not.

Sony Sony is a large electronics company. Although it doesn't have the best technology to make cameras, it has enough capital to promote its non-professional cameras with its good reputation in TV and other audio-visual fields for many years. However, I personally admire Sony. In the field of digital cameras, it has become an absolute leader with its eagle-eyed carl zeiss lens and gorgeous appearance. In the field of LCD TV, Sony is a complete layman. Almost all LCD screens are made by Samsung. What about Samsung's screen? In the field of camera DV, carl zeiss lens also shook the position of JVC's boss and originator. What Sony deserves to admire is its innovative spirit of all-round development. Let's applaud such an enterprise.

Canon Canon Canon is a recognized leader in the digital camera industry, with the strongest technical strength and market operation ability, and the market share of digital imaging products has always been in a leading position. Canon has the top optical technology and the production capacity of the core component CMOS sensor. Its software denoising technology is unique in the world, which ensures its high imaging quality. Its imaging features are true color reproduction and less noise. Both consumer cameras and digital SLR have made great achievements. Camera brands used by Karen Mok and Jackie Chan.

Nikon is the only professional camera brand that can really compete with Canon Canon. Nikon's advantage is that the machine is ultra-thin and fashionable, and it is very professional. Together with the world-class nikkor lens, Nikon is a cost-effective camera with the highest sensitivity. Canon's is generally ISO 1600, while Nikon can easily achieve ISO6400, which is convenient for taking pictures in dim environment. Personally, I think Nikon's appearance is fashionable, but not as fashionable as Sony's. Nikon's camera is very professional, but it is not as professional as Canon, but Nikon has a high market share, second only to Canon, and the second child in the digital camera industry is Nikon. Want to look good and slim, Nikon is the best choice, and the camera is a professional machine. And professional photo studios all use Nikon SLR. Canon, home computer, not bad.

Advantages and disadvantages of Canon: Advantages: The world's number one digital camera manufacturer, the camera is most suitable for taking portraits, and no one can beat it.

Disadvantages: the appearance of the camera is not very fashionable, and eating itself is the foundation of professional brands. The annual sales in recent years almost lost to Sony.

Advantages and disadvantages of Nikon: Advantages: The second digital camera manufacturer in the world, the camera is beautiful and professional, with high definition, which is most suitable for shooting scenery, and no one can beat it.

Disadvantages: the market operation ability is far less than that of Canon and Sony.

Advantages and disadvantages of Sony: Advantages: The appearance is the most beautiful and gorgeous of all cameras.

Disadvantages: Not a professional brand of digital cameras, and the technology is not mature.

Advantages and disadvantages of Samsung: Advantages: The camera is also beautiful and has the most functions. This multifunction can be harvested with MP3 and MP4. 1300 or so.

Disadvantages: I just stepped into the field of digital cameras, not a professional digital camera brand, and my technology is not as good as Sony, let alone Canon and Nikon.

Personally, I like the fashionable appearance. The price of Canon Ixas series 970 just listed in May 2008 is around 3400 yuan. Because it is a professional camera brand, it is more expensive, 1.2 million pixels, which integrates all the advantages of Canon Ixas series cameras. It is the king of Canon cameras this year, and its status is as important as Nokia's N96. The price of Canon Ixas 75 is about 1500, with 8 million pixels. Canon Ixas 860 is recommended for wide-angle cameras, and it is only about 2 100 now. Canon Ixas has the functions of face recognition and optical image stabilization.

Digital camera sales, output, attention and quality ranking: 1 canon 2 Nikon 3 Sony 4 Samsung

Canon and Nikon are both optical manufacturers, so it is good to use optical sensitive components as digital cameras, and the optical zoom is also considerable. To buy a professional camera, you should choose an optical manufacturer, and Canon is the first choice, so as to ensure good image quality. Those who study photography should choose optical manufacturers. If you pursue professional quality instead of gorgeous appearance, choose Canon and Nikon, and the shooting effect will definitely surpass Sony and Samsung.

Sony and Samsung are both big electronics companies, so their digital zoom is considerable, but the important thing for cameras is optical zoom. Buy fashionable and beautiful appearance, naturally choose electronic manufacturers, Sony is the first choice. Boys buy Sony cameras to coax their girlfriends ... >>

Question 9: What is the highest pixel of the camera? 1. In the field of home cameras, the camera with the highest pixel at present is Hasselblad H4D600,000 pixels; In the field of professional cameras, at present, the camera with the highest pixel is the giant 6x 17 digital camera of Swiss seitz company, with the pixel of1.600 million; Cameras in the fields of national defense science and technology such as military industry and aerospace have higher pixels. The camera with the highest pixel on the earth is the Pan-STARRS astronomical camera system of MIT, with a pixel of 65.438+0.4 billion.

2. In the portable camera (card machine), the highest pixel at present is Sigma DP 1-3M, with 46 million pixels, that is, X3 sensor patented by Kodak Technology Sigma,150,000 pixels.

3. Pixel is directly proportional to resolution (or sharpness), but not absolutely;

Generally speaking, the pixel is directly proportional to the resolution. The larger the pixel, the higher the resolution, the clearer the picture, and the larger the area that can be enlarged. However, because the imaging resolution is the same as the sensor resolution and the lens resolution, there is a signal-to-noise ratio between the resolution and the image quality. If the signal-to-noise ratio index is poor, it is useless for the pixel to be higher (the resolution is higher). For example, some 1/2.3 card machine sensors have180,000 pixels, and the sensor resolution is high enough, but the signal-to-noise ratio is poor and the lens is not good. Once the picture is enlarged, the picture quality will be in a mess. This is a fact. So the higher the pixel, the clearer the photo;

5. Is the camera clear enough? Pixel is one of the options, but it is not an absolute option. High-pixel imaging must meet the indicators of single pixel area, pixels per inch, sensor area, signal-to-noise ratio and so on. If only the pixel is high and other indicators are poor, not only the photo is not clear, but also it will be worse than the low pixel.

I hope it will help the landlord.

Question 10: What is the camera with the highest pixel now? How much/how much? At present, the pixels of SLR cameras depend on what you are talking about, such as Hasselblad's ultra-high-end, hundreds of thousands of RMB, and the pixels can reach 60 million.

Moreover, the general SLR pixels are also above 6.5438+million, mostly 6.5438+0.2 million to 6.5438+0.8 million, and Sony's a900 is 24 million.

Ordinary digital cameras are now more than 654.38+million pixels. In fact, pixels only determine the size and resolution of the picture, not the higher the pixel, the clearer it is. There are100000 pixels, which is enough for daily use. Otherwise, how can an ordinary SLR be around12 million pixels?

As for the digital camera with SLR effect, I recommend Fuji's F200exr or F80/70exr, because their sensors are good, so the film quality is good. Other expensive digital products, such as Canon's G series and Panasonic's LX3, are all good, but their cost performance is not as good as Fuji's.

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