Is Sony a72 worth buying?

1, whether the old camera (including A72) is worth buying depends mainly on the purpose;

2. The performance of the camera is mainly reflected in two aspects, one is the imaging quality, the other is the control level;

3. The imaging quality is determined by sensor, lens and image processor, in which lens accounts for 50%, sensor accounts for 45% and processor accounts for 5%. ADC (analog-to-digital conversion) and SNR (signal-to-noise ratio) are the core technologies that affect sensor imaging, and their quantitative indicators are color depth, dynamic range and available high sensitivity. In recent ten years, there has been no technical innovation in ADC and SNR of sensors, and they are all minor repairs, which have no substantive significance for improving imaging quality. The lenses are the same, and the image processor has little influence on imaging (accounting for a large proportion of computing speed, including focusing and aiming operations, caching speed operations, etc. ), negligible, the imaging quality of A72 is still very good;

4. The most important control levels are focusing performance and continuous shooting ability, which mainly reflect the capture performance of shooting dynamic themes, such as sports meetings. Its core technology is the data refresh rate of the sensor and the computing power (especially the computing speed) of the processor. With the rapid development of technology, the new generation of cameras will be significantly improved in this respect. As far as the control level is concerned, A72 is outdated and shooting sports themes is not enough;

5. The camera updates quickly for two reasons. One is the market reason. Everyone updates, and if I don't update, there will be no market. This is a marketing tool and has nothing to do with technology. The second is to improve the handling performance. The maneuverability of the new wide-angle camera will definitely be better than the old one. The key is to see if users need to use better handling performance. If it's just a family souvenir and has no sports theme, A72 is still worth buying. Instead, it is recommended to buy a newer camera.