Medalight professional light panel is ultrathin, lightweight, and portable to take. The LED lights at both up and down sides make the illumination more uniform, which can restore the most realistic effect of an object. Its effective viewing area is 4x5 inches and it can restore the color of an object up to 98% of its real color. It is made of professional light guide plate material. It uses LED cold cathode light source, low heat output. The light source is soft. It is applied to view the negatives of medium format or above and shoot some small and exquisite things like jewelry. It can hold about six 135 negatives at the same time. It can also be used to examine the light source for some specific products. To be start ,the user can choose 6 pcs of #7 batteries or connect it with a 9V1A power adapter. If it has already been installed with batteries, then the batteries will be outage automatically when the power adapter is connected.