RACE OF THE MEGAPIXELS
The number of the megapixels grows in the modern cameras by leaps and bounds. Many amateurs believe that if there are a lot of pixels, they will get the qualitative picture. Let`s try to understand if it is so.
Let's start with the disadvantages of the megapixel cameras.
A huge number of the megapixels on the sensor of the camera mean that these pixels are very small. So the small pixel in the matrix absorbs little light. As a result, the picture can be very noisy and the noise may appear in the picture. Therefore, if the picture has many megapixels, it will be very "noisy".
Each new generation of the cameras at the same time increases the number of the pixels and tries to reduce the noise level. But there are certain limitations for which it is very difficult to get out.
Go ahead. If there are many pixels, the files will be large, especially taken in RAW. Firstly, these files must be stored somewhere. Secondly, editing such large images takes a long time. The time for preparing the files for the customer, as we know, is never enough. Thirdly, it requires the powerful computers.
The question of the harshness. If the photo has many megapixels, it will be difficult to achieve the per-pixel sharpness. You will have to buy the expensive lenses with a high resolution.
Matrix, which is stuffed with a lot of megapixels has a lower diffraction limit. This means that it will be difficult to achieve a sharp image on the closed diaphragms. This is a serious problem.
If you shoot handheld, it may be per-pixel blur. In order to avoid this, it is necessary to reduce the shutter speed and raising ISO, which isn`t always good.
Now about the advantages of such cameras.
Due to the large number of the megapixels, you get the opportunity of a strong crop of the images without a quality losing. However, this is possible with a good detail of the image that pulls the using of the good optics.
Another benefit - it is the ability to print on the materials of a very large format, for example, A1, and more. Often this is the only one argument in favor of these cameras.
The good news is a wide dynamic range and a greater color depth, which is very important, if you need to convey the color very accurate.
In practice, almost never you can meet the formats A1 and more. Also, not all photographers shoot reproductions of paintings, where you can`t do anything without an orderly color reproduction. You can get a photo of the size of 1 x 1.5 m with a 12-megapixel camera. A strong crop such the photo or the stretching it back to its original dimensions is unlikely to be needed. Moreover, with the old 1.2-megapixel camera you can get a fairly good picture of the format 10 x 15 cm. So at first you should decide your purpose of buying a camera.
We wish you to take the successful pictures!