What is the difference between 4k video shot on different sizes of the matrix?

I

Ingerniated2018-07-01 10:58:35

Cameras

Ingerniated, 2018-07-01 10:58:35

Hello!
Tell me, what is the difference between 4k videos, which are shot on a gopro, for example, where the matrix is tiny and at least the same Sony, where the matrix can be 22 and 36mm?

Reply

Answer the question

In order to leave comments, you need to log in

3 answer(s)

M

m0nym, 2018-07-01
@m0nym

Price. The smaller the matrix, the cheaper it is in production. Moreover, the price falls even faster than the difference in the area of the matrices.
By the way, a good reason for GoPro designers to choose a small matrix is this one (except for the price). Since there is simply no time to focus during extreme sports "Including automation does not have time to focus quickly and accurately.
On the other hand, large sensors with their narrow depth of field make it easy to highlight the main idea. The image from them looks more "cinematic".
Image detail. It echoes the previous paragraph about noise. But in addition to the limitations of small sensors, there are also limitations on the resolution of small lenses.

V

Vladislav Kadun, 2018-07-01
@ZXZs

The matrix is responsible for the sensitivity to light and the amount of distortion.
Read more here .

D

Dmitry Bay, 2018-07-01
@kawabanga

There are a lot of dependencies out there. Some important ones are:
1) Physical size of 1 pixel. For video cameras. Less applicable to cameras. In other words, the larger the physical size of a pixel, the more characteristics it has. - less noise, more response, more information can carry.
2) The larger the physical size of the matrix, the better the lens can be put.
Yes, in general, under standard conditions, you will not feel the difference. Even more than that - sometimes you won't be able to tell the difference between a phone camera and a DSLR in the most ideal conditions. You will also not notice the difference in ideal conditions between a Hasselblad and a cheap canon - https://tityaev.livejournal.com/6856.html
But at the same time, the large size of the matrix (physical) is not always a plus for the camera. Sometimes the opposite happens. Reportage cameras often have a smaller sensor size than studio cameras.
If you take a video, then shooting on FF (36mm) - it will be more difficult for you to tune in to focus when reporting. And the standard film frame is super35 , which corresponds to the APS-C matrix.
New features like autofocus in cameras with video - they work just on cropped cameras.