30x optical zoom 10 million pixels When the maximum zoom is reached, it will not affect the image qu

The correct and complete answer is as follows:

Factors that affect image quality:

1.Optical lens design quality.

Optical lenses have performance indicators like all hardware, the most important indicator of the camera lens is MTF, in layman's terms, that is, the black and white stripes are imaged through the lens, in the case of dense stripes, the final image will become a gray piece, that is, the stripes can no longer be distinguished, at this time, even if your camera sensor is ideal, or has nothing to do with the sensor. What factors affect the quality of the lens: first of all, diffraction, which is the physical limit; Optical aberration on the basis of the previous one, due to manufacturing factors such as design and processing, the lens will inevitably become a spot for a point image (but the spot is large and small).

Therefore, it can be said that the larger the zoom range, the worse the actual lens quality, which is actually sacrificing quality (or actually the average quality within a large optical focal length) in exchange for convenience (a lens goes all over the world), so LZ can see that the really expensive lenses and professional photographers use prime lenses.

Because it is too professional, manufacturers usually do not give the MTF index of the lens, but it is possible to find it on **.

2.Camera sensor.

The camera is a civilian product, the sensor is mostly CMOS, in fact, CCD is better, scientific cameras mostly use CCD as a sensor, about the comparison of CCD and CMOS, and the impact of pixels on the final image, LZ can refer to other articles on the Internet, there are many.

3.Other factors.

Factors other than the above two points, such as photographic skills, such as the field of view in the case of telephoto, and the image will naturally be blurry if you hold it, but you can overcome it with a tripod, so these are usually not really influencing factors.

Finally, to emphasize, image quality is the result of synthesis, and the whole process is as follows.

Object – Lens (photographic technique also plays a role) – Image sensor – Software – Display (LCD screen or computer, **) is the whole chain, and any link may affect the final quality.

It definitely affects the picture quality. If the zoom ratio exceeds 5x, the quality of the lens will drop dramatically, and 30x can be imagined. And the maximum zoom is easy to paste because of hand shaking, so it's best to shoot on a tripod.

The image quality of all telephoto cameras is not very good, and at the maximum magnification, the image quality is even worse, and the camera is unstable and prone to blurring.

100 million pixels is equivalent to three times the optical variation, and in some scenes it may be stronger than a triple optical zoom.

Summary. Generally speaking, the larger the magnification of the optical zoom, the better, but as mentioned above, when the zoom is large, stabilization is important.

Generally speaking, the larger the magnification of the optical zoom, the better, but as mentioned above, when the zoom is large, stabilization is important.

To put it simply, the larger the optical zoom ratio, the greater the effect of "pulling the scene closer", but in the case of large magnification zoom, the camera or video camera is slightly shaky and shouting, the rubber hall will make the subject blurry or shaky, and a tripod must be used, which is somewhat inconvenient.

The optical zoom lens can bring a lot of variance to shoot stupid shots, but the optical zoom range is not as large as possible. The larger the zoom range, the heavier the lens, the greater the possibility of distortion of the picture, and the more money it makes.

So generally choose 10x, not 30x.

No, the larger the zoom ratio of the lens, the more things need to be considered and balanced in the optical design, and the result is that the performance tends to be mediocre in all aspects. At present, the longer focal length machines are:

1.Fujifilm HS22EXR is the best one in the current telephoto machine, and the cost performance is not the highest, but the imaging quality and workmanship are the best among the telephoto machines, and it uses Fujifilm's own 1 2-inch back-illuminated CMOS sensor, which is also the largest image sensor in the current telephoto machine. HS22 can be operated manually, like a DSLR, manual zoom, zoom ratio of 30 times, equivalent to 35mm camera focal length is 24-720mm, the shape is also very similar to SLR, relatively strong, large size.

2.The Nikon P500 has the largest zoom ratio of any telephoto camera currently available, at 36x, a 35mm-equivalent camera focal length, and the wide-angle end is the largest of all consumer-grade DCs. The P500 pays more attention to the performance of picture quality.

It is equipped with a 12.2 million pixel back-illuminated CMOS for excellent image quality at high sensitivity. It also has a 3-inch 920,000-pixel LCD, which can also be flipped up and down within a certain range, and a variety of manual shooting modes are complete, HDR shooting can be carried out, and full-size** continuous shooting can reach 5FPS, which is also destined to P500 has a wider range of applications.

The greater the light variation factor of a telephoto camera, the worse the imaging. The camera is actually as big as possible with the sensor, and the lower the pixels, the better.

4K camera, optical zoom 20x, if you don't turn on digital zoom to 60x, the first 20x or not optical zoom?

Hello dear<>

4K camera, optical zoom 20x, if you don't turn on the digital zoom to 60x, Qianxiang let 20x or is it not optical zoom? The answer is as follows: Hello <> dear

For your question, optical zoom and digital zoom are two different concepts of zoom. In the optical zoom range of the camera, the zoom within 20x is optical zoom. And once this range is exceeded, most cameras extend the zoom ratio with digital zoom.

So, when you zoom in to 60x, the first 20x is optical zoom and the remaining 40x is digital. I hope mine can help you <>

The brand of the card machine.

Canon is the best, and of the two Canon models, the 130 is better because it is made in Japan.

Sony's main thing is that it looks good and the effect is average.

Fujifilm and Panasonic are not particularly well understood, but these two brands have gradually declined in the camera.

Fujifilm and Panasonic home machines have always been among the top sellers in Japan, and Fujifilm is the most cost-effective. The F85 is also the latest product. Canon machines are strong in both DSLR and home use, but they are not cost-effective.