I have a Nikon D90. What other equipment does the clapping bag need?

You don't need to make a special studio, just transform the room casually. You can search for "studio suite" on Taobao, and around 200 will meet your requirements, and the better one is around 300. You lift the chain belt with a white cotton thread and PS it a little after the photo is taken.

Supplementary answer:

1. How many watts should the photographic lamp use? What is the color temperature?

Photography light bulb 1 15 watt is enough, of course, no matter how big the power is. Recommended color temperature of 5500, pure three primary colors. If you need to change the color temperature, you can set it in your D90 or PS.

2. What should the bottom plate use to make a beautiful reflection? The reflection of white background cloth is not good enough.

There are special reflectors for sale, and there are many colors. Of course, it's best to bring it in your suit.

3. How big is the bag-shooting shed?

It depends on the size of the bag. 60CM is enough for the bag in the picture. It's too big to fit in this soft box.