I would definitely play around with it. Your not going to want to go too wide with 4 because odds are they will move around a bit and you’ll end up with some soft faces. Some key things to remember would be try to keep their faces all on the same plane of focus, that will allow you to shoot a little wider. Generally with 4 kids I would aim to shoot around f/4 but certainly play around. At that aperture you may want to consider moving them further away from the background. Keep in mind the closer you are to them and the further away from the background they are the more bokeh you will get!
Last is the Julius Studio, which is another crossbar set up that spans up to 10 ft. Like the others, this one also comes with a carry bag and the necessary clamps for securing your backdrop of choice. Also, like the others, this one is made of lightweight tubing that makes it easy to carry. Lastly, while users said this was easy to set up and use, they recommend using sandbags or some other type of weight to keep the system secure due to the light weight of the tubing.
Photo Floors or as we like to call them Roll Up Floors are the perfect compliment to any backdrop. Lightweight, easy to roll for storage, and very realistic. Photography floors are made of a thick durable neoprene rubber backed material which provides an anti slip faux flooring mat. Whether you are looking for a faux wood photography flooring or trying to bring the grass fields indoors, there are tons of options.
Another buyer mentions that it’s easy to adjust the portable backdrop stand and that it’s perfect for light-weight backdrops. He highly recommends it as one of the best background stands available. However, a couple of users have noted that the product is flimsy and breaks because the plastic is of poor quality. Some also complain that they received a damaged unit.
If you do many in-studio portrait sessions, you probably have a lot of space set aside for background materials, props, and supports. Add to your stash with canvas backdrops for photography, and selections made of durable, low-maintenance materials, such as cotton and wrinkle-resistant polyester. Several backgrounds come on rolls so you can mount them to autopoles and smoothly swap out designs between poses. Seamless paper works particularly well for everyday needs, as you can roll sheets out to the desired length and then reuse or trim away pieces for easy recycling. Muslin photo and video backdrops feature non-reflective surfaces that diffuse light more naturally, which can help keep the focus on your subject. If you prefer materials that allow for fast and efficient cleanup, vinyl and PVC backgrounds are a solid choice, especially when you use them in potentially messy situations involving pets, babies, and toddlers.