In photography, what is the standard to evaluate the picture quality?

The laboratory standards for evaluating image quality are:

1. The laboratory evaluation method of image quality is the "modulation transfer function" evaluation method;

2. The core of "modulation transfer function analysis" is mainly composed of three parts, one is theoretical modeling analysis, the other is MTF analysis, and the third is CTF test, which is extremely professional and needs to calculate a large number of higher-order function formulas, and non-professionals simply can't understand it;

3. The test results of "Modulation Transfer Function Analysis" are divided into three parts. One is the color offset value, which is based on 0. The higher the positive and negative offset value, the worse the image quality; Second, the original signal-to-noise ratio, the higher the signal-to-noise ratio, the better the image quality; Third, the dynamic range of RAW, the higher the tolerance (that is, dynamic range), the better the image quality;

4. Image quality and image quality are two concepts. Image quality is objective and can be quantified. The quality of a picture is subjective and varies from person to person.