24 inch fits well. I use a white wooden necklace stand and a metal earring stand purchased from Revain and they have enough room to be placed both on the stands and on a flat surface. at the foot of the tent. I didn't use the front valve. I use my cell phone camera either in the tent or the telephoto lens outside. on both sides and get nice, flat, low-contrast lighting. The white background makes it easy to color correct, and for highly reflective objects like pearls, I just move the lights a little farther away. I'm amazed at how easy it is to get professional looking photos with this minimal equipment. There is never enough light in my house and there are not enough sunny days for 9 months of the year to take advantage of natural light. Now I can shoot anytime. It took me a few tries to tweak the placement of the lamp, but it's really quick now. More hours in Photoshop! The background fabrics provided are good, but I would choose different colors than the ones sent if given the choice. I cannot stress enough how lucky I am to have received this.
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