Which camera is better for taking registration photos or children photos? What lenses do you need?

The requirements for image quality are not very high. The key is to restore the truth, and the characters can't be distorted. Most of them are indoor busts (the whole baby is also equivalent to an adult bust), and you can use a fixed focus of about 50 mm The cheapest ones, such as the second-generation small spittoon (Canon SLR, if Nikon has the same grade lens), are better than the zoom lens.

As for the fuselage, the best one to open a photo studio is 5d3. At present, the price is more suitable and the functions are more complete.

If you shoot children outdoors, especially children aged 4-5, it is convenient to zoom, 24-70, 70-200 is ok, but the body requires a little higher, such as fast and accurate focus tracking, generally using 5d3 or 5d4.