I used this twice to photograph night views from airplane windows. I no longer need it because I've gotten rid of my camera, so I'm putting it up for sale. The retail price was about 5000 yen. It takes a bit of courage to unfold this item inside an airplane, but I never received any warnings or strange looks. I was able to take beautiful night view photos from the airplane window. I recommend it. (Quoted from the catalog) This item is a great help in preventing reflections of the photographer and interior lights on glass!! It's also used on the International Space Station "Kibo" "Ninja Ref is effective in various scenes." ~Examples of use with the black side facing the subject~ ・Photography through windows of airplanes, trains, buses, etc. ・Photography from observation decks such as Tokyo Tower and Skytree ・Night view photography (through glass) ・Tropical fish in aquariums and tanks ・Product photography ~Examples of use with the white side~ ・As a reflector for product photography and macro photography of flowers ・As a catchlight reflector for portrait photography ＜Features＞ ◆When expanded: 50cm in diameter, when stored: 20cm in diameter ◆The front is a black reflector to prevent reflections on glass, and the back is a white reflector. ◆Lightweight and can be folded compactly. ◆The hole in the center of the reflector supports lenses with diameters from 40mm to 82mm. There are wrinkles on the reflector due to storage, but there are no problems with its use.