How to tell whether a camera is good or bad?

If there is no perfect camera, don't just seek perfection, just basically meet your main needs, otherwise you will be exhausted.

I can't choose either!

Cameras with similar prices and functions, if they are all famous brands, have little difference in actual performance.

It's enough to deal with, there's no need to be in a dilemma!

In order to make different people's money, manufacturers do camera transformation, and there are not many substantial changes. Don't be confused!

According to your own needs, adhere to the castle peak and not relax!

There are no super cheap and super good goods in this world, and neither are digital cameras. Never take a photo of 1000 yuan.

Compared with 2000 yuan!

The second measure: have some basic skills!

There are many terms in the camera, such as actual pixel, effective pixel, CCD size, wide angle and zoom.

, aperture ... These terms need not be delved into, but they can't be ignorant! If you want to know a general idea, you can't be fascinated by indicators.

Confused! Let's correct some misconceptions about literacy:

1. How high is the effective pixel? Effective pixels are pixels that can actually be generated by photosensitive elements. We often see cameras.

The actual pixel is 7.2 million, and the effective pixel is only 7 million. Why? Because when the digital camera images, the edge of the photosensitive element

The edge part will be blurred by the diffraction of light. In order to ensure the imaging quality, this part is imaged on the photosensitive element.

Will be discarded, so the photosensitive unit can't use 100%, but use it, that is, get this part of the final image.

Sub-pixels are called effective pixels.

So how many effective pixels are enough? Muyu thinks: 5-8 million household cameras are inexhaustible.

Effective pixel pull. There is no special relationship between pixel height and imaging clarity! Remember: pixels that are too high will only be wasted.

Your storage resources!

What is the size of 2.2? CCD？ CCD is the "image sensor" of digital camera, and its function is equivalent to photographic film.

Common CCD sizes are11.8 inch, 1/2.5 inch and 2/3 inch. Theoretically, the larger the CCD size, the smaller the CCD size.

The better the light collection effect, the more information recorded in the picture, the richer the details retained, so the more perfect the image is.

Bright.

However, in fact, our home camera does not need a large CCD. One is that the CCD is too big and the camera will change.

The big one. Secondly, for a camera with 5 million to 8 million pixels, 1/2.5 inches is enough. We're not involved.

Photo contest, right? Of course, it would be better if it is11.8 inch or even larger.

3. What's the difference between optical zoom and digital zoom? Optical zoom is a real pixel and can be restored to its original state.

There will be no quality loss of scenery, while digital zoom is at the expense of photo quality. The more you use, the more you lose.

The greater the loss, the digital zoom is almost unnecessary in actual use.

Remind everyone to remember that digital zoom is basically useless, so don't think that digital zoom is real zoom!

4. How far is the optical zoom? Many friends like to associate large zoom with professional digital cameras, and even

It's a bit too one-sided to associate a large zoom camera with a boutique digital camera! Although the attraction of large zoom is not

Small, but one thing to understand is that the focal length is not the ultimate goal, and the most important thing is the focal length range covered by the lens.

Generally speaking, it is appropriate to use a medium focal length (85- 135mm) when shooting people, while when shooting landscapes and buildings,

It is best to use a wide-angle lens (18-40mm). Large zoom digital cameras often have their cake and eat it.

The reason is simple: the large zoom camera has a short depth of field, although it can stand out from the main body, but the focusing speed is slow and the focusing accuracy is low.

Not high, it is easy to cause the subject to be blurred (which is often called out of focus). The wide-angle end of a large zoom camera is prone to serious

Dispersion and image distortion, if the lens quality is poor, it is difficult to focus all colors of light on one point, if there is no anti-shake function.

With it, as long as the light is slightly insufficient, it is difficult to ensure that the hand does not shake, resulting in direct consequences.

It's just a blur

Muyu thinks that 3-5 times zoom is enough for home cameras. Of course you like the feeling of binoculars, so I have nothing to say.

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

There are few opportunities to use in actual combat, 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.

However, Muyu thinks that it is better to have manual function than nothing, and cameras with manual function can also shoot automatically.

. But a manual camera is not small, hehe, it doesn't matter if you want fashion.

6. How big is the screen? Now the camera, the screen is getting bigger and bigger! Face project. But this face

The cost of this project is very high. Finally, the person who wants to buy the camera pays for it himself! Make the screen bigger, not bigger.

The price has gone up, and the final sacrifice is the key performance of the camera! Therefore, the bigger the screen, the better! Even if you want to

If you want a big screen, you don't have to choose a big screen with high pixels. If the price is high, it will mislead you! You are on the screen.

The picture looks perfect on the screen. When uploaded to the computer, alas ... it's not like this at all! In addition, big

The screen consumes a lot of power!

Therefore, Muyu suggests that a screen of about 2.5 is enough, and don't take the screen size as the "difficulty index"