Backdrops are widely used by studio photographers for a variety of work, but being made of fabric, you will often have to deal with creases and wrinkles that can detract from an otherwise compelling shot. Luckily, it is not overly hard to get rid of them using Photoshop, and this great video tutorial will show you how to make it look like they were never there.
Coming to you from Aaron Nace with Phlearn, this quick and helpful video tutorial will show you how to remove creases from a backdrop using Photoshop. While there will certainly be times when you have to deal with creases in a backdrop in post, most of the time, taking care of them before you press the shutter will make your life a lot easier. One of my favorite non-photography accessories is my fabric steamer, which practically lives in my bag now. Running it across my backdrop after I set it up takes care of any wrinkles (it is great for clothing as well, of course). If you get one, just be sure to use distilled water, as tap water can leave behind mineral buildup that will shorten the life of the steamer. Still, if you happen to miss a crease, knowing the technique above will help you out. Check out the video above for the full rundown from Nace.
Without looking at the video, I assume it's using median.
There is a lot of mouse clicking in this video... step one.. get a tablet... :-D
I wish I learned this 3 years ago when I manually cloned out the creases from dozens of photos. Yeah, I never learned Photoshop correctly.