How to take pictures on a white background with Canon eos 5d mark ii?

Shoot in RAW format and throw it into Photoshop. First, open it with the Camera RAW plug-in, and adjust the gray to be as close to white as possible. Then, enter the main interface of Photoshop, and change the selected background color range to color, and slightly adjust it to white. If this process is well operated, it can completely not affect the color of the subject.

Of course, you can also take photos and cut pictures directly, and take out the main body and throw it on the white background layer.