The fabric has a slight odor similar to vinegar and evaporated milk but airs out if you leave it unfolded a few days. The fabric, as expected, is lightweight but decent quality cotton. By definition Muslin is lightweight cotton cloth and, yep, it's thin so a backing layer is necessary if used against a bright light or window (e.g., my uploaded image). It ... full review
Shooting on a clean white backdrop can be one of the more complex in-studio lighting setups around. Properly exposing for full lengths while giving your models room to work can require four or more extra lights and considerable amount of setup time. While taking the time to take care of the details is important for getting the perfect image and saving yourself hours of retouching on the back end, sometimes you just want to get a nice clean background without the hours of prep.
Breaking news: Bokeh is in! With Lastolite’s Out of Focus Backgrounds, you won’t need to fiddle with your camera’s aperture to mimic that dreamy depth of field. There are a pair of double-sided backdrops in the Out of Focus line: one features a blurred seascape/autumn foliage, and the other sports summer foliage on one side and city lights on the other. At 4 x 5 feet, these backdrops should handle close to full-length portraits and will collapse to about a third of their size for transport. They weigh in at 3.3 pounds and come with their own carrying case.