Canon SLR camera problem

In terms of image quality, 550D, 60D and 7D are the same, because the same CMOS sensor is used (not only the same size, but also the same model and specification).

However, as a high-end machine with Canon APS-C format, 7D is much better than 550D in other aspects, such as focusing performance and continuous shooting ability (7D has 19 point focusing, and 19 point is full cross focusing, while 60D only has 9 point cross focusing, 550D only has 9 point cross focusing, and 7D has dual Digic4 processors and double bandwidth data. Continuous shooting's performance is much stronger), as well as the viewfinder, level meter, shoulder screen, etc. with better handling, more comprehensive control of keys and wheels, and wider field of vision. ), and the workmanship quality of the other 7D is much better than that of the 550D. 7D is magnesium alloy fuselage, 550D is only engineering plastic, and the use times of 7D shutter are much higher than that of 550D.

As for 5DII, it is the other extreme. 5DII pays full attention to image quality, which is much better than 7D and 550D. After all, it's Quan Huafu's machine. CMOS sensors are much bigger than those two, with stronger effective pixels and high sensitivity. However, the continuous shooting focusing ability of 5D is not as good as that of 7D or even 60D.

To put it simply, 1D/ 1DS is omnipotent, with 5D extreme image quality, 7D high-speed focus on continuous shooting, x0D medium focus on continuous shooting medium image quality, X00D weak focus on continuous shooting medium image quality and X00D weak focus on continuous shooting weak image quality.

Taking good photos mainly depends on personal skills. If you are good at it and have good ideas, you can make a classic movie even if the equipment is poor. On the contrary, a person who is not good at it, even if he is given to the Big Three, will try his best to shoot waste films. In addition, the imaging quality is enough just for 550D, and if you add a good lens, it is no problem to take a good photo.