Canon 400D, change lens

1. There is no essential difference between 400D and 40D. If you want to buy 400D, you should buy full-frame camera;

2. For those who have 400D, it is best to buy the red circle lens first and then the full-frame camera. ;

3. Playing with a SLR is a "point of no return". I suggest you find some friends in the red circle, use your camera, try other people's lenses, compare them, and see which lens is suitable for you to buy. , think about your needs before buying, and you will regret it if you buy wrong;

4. Come on, I have full-frame cameras, f1.2, and f2.8 lenses, my equipment It is specially shared with friends;

5. The ultrasonic lens has a problem of "out of focus" (the focus point is on the nose, but the nose is blurry but the ears are very clear), each lens must be Independent "auto-focus fine-tuning" otherwise the focus will be out of focus when using a large aperture. Only Canon 50D and above machines have the "auto-focus fine-tuning" function. I remind you that if you are not full-frame, you must buy at least a 50D;

6. Once upon a time" The main reason why "out of focus" is not taken seriously is that the system image resolution is not high, and "out of focus" is not easy to detect. Once you place the red circle, the lens is clear and the aperture is wide, the problem becomes very prominent. I personally have deep experience with this problem. The above is for reference.

Supplement: The original 18-55, 50/1.8 telephoto is equipped with Canon EF 55-200mm f/4.5-5.6 II USM 2000.

The reason is: the Xiaobai series is so good But its focal length does not match the lens in front of you (your telephoto end is 55mm, Xiaobai’s starting point is 70mm, which is 18-55-Xiaobai is equipped with a 20mm vacuum); EF 55-200mm f/4.5-5.6 II USM this The head is a full-frame head with a relatively large aperture and a USM, which is driven by an ultrasonic motor and focuses very quickly.