How to choose Nikon D7000+ Longteng 17-50 and Nikon D90+ Longteng 17-50 for a person who has no photography knowledge at all? How to choose these two?

The picture quality of D7000 is higher than that of D90. More than one grade.

Whether it is low or high, D7000 is better and more exquisite.

As for the lens, if the budget is small, we can consider the non-shake version, that is, A 16, which is mainly cheap.

If the budget is large, don't buy Longteng, buy Yima's 17-50os. The head is good. 17-50 is not a fragment.

What is the constant 2.8 for, just to use it? Compared with meat, Longteng constant 2.8 is not available.

There are all the right horses, and the sharpness is good.

If you just play at ordinary times, in fact, D7000 sets of machines are enough. If you have more preferences, you can choose a large aperture fixed focus lens. 35/ 1.8G, 50/ 1.8G, 85/ 1.8G, 28/ 1.8G are all very cost-effective, and the picture quality is very worthy of the price.

Anyway, D90 is too old to consider.

If you don't know anything about photography, it is recommended to take a camera first, and don't waste money.