7D, D5300 and D3300

7d is a high-speed machine, because it is too old, and the picture quality was not good when it was released that year (considering the problem of software optimization, the picture quality was even slightly weaker than that of 550d and 600d using the same cmos). Its biggest feature is an all-metal body, which is very protective, with 8 high-speed continuous shooting per second, but after all, these two features have little to do with taking pictures. Therefore, it is really not recommended to buy 7d now, unless you specialize in shooting birds in the wild, which requires the adaptability of the camera in harsh environment and high-speed shooting performance. Otherwise, don't choose the heavy and poor 7d. (On the issue of high speed, the continuous shooting speed of the d3300 and d5300 both exceeds 5 frames per second, which is actually very fast in daily use. ) So I recommend choosing from d5300 and d3300:

D5300 and d3300 are very good choices. D3300 is a simplified version of d5300. The picture quality of the two is similar, both are excellent 2400w pixels, and there is no low-pass cmos. Low-quality image is comparable to full-frame machine, and high-quality image is acceptable. The main difference between d3300 and d5300 is that 1 ... the focusing system is slightly weak. 2 ... smaller. 3 ... The fineness of the built-in settings is simplified. Four ... no flip screen

If you are at home, then the d3300 is very good. After all, it is small in size, simple in setup and easier to operate.

If you have certain creative needs and certain video shooting needs, then buy d5300. The reasons are as follows: 1...d5300 has an entry-level SLR focusing system with the highest density and the best coverage, and it is very comfortable to use at 39: 90. 2...d5300 has a flip screen, which is very useful for low-angle shooting and video shooting. 3 ... The built-in settings of the D5300 are more detailed and complete, and the depth of play is more adjustable (of course, only some software gaps can be ignored, but there has always been such a small difference between 5xxx and 3xxx, because the official has considered their positioning) ... Fourth, the volume is slightly larger than that of the d3300, and the grip is slightly better.