I have a Nikon D90 and I want to upgrade it to a D800. It is mainly used for studio photography, product photography, food photography, and several lenses. I don’t know if I can use it.

A. 18-105 and 10-24 are half format heads. They can be used on D800, but are not recommended. 501.8 can be used on D800, but generally 35MM focal length or 85 or above is recommended. 50 is not so good. Recommended, the viewing angle is very flat, the 602.8 can be used with the D800, it has a very sharp head, and can be used for photography.

B. According to your requirements, it is recommended that you use 14-24 and 24-70. These two heads are enough for you. 501.8 can be saved for shooting small things that require background blur. The 602.8 is basically a dedicated macro head.