This article contains an international standard of A0 paper size in mm, cm, inch. It is as ISO standard and apply widely internationally, and typically used for writing paper, stationery, multiple document printing. In general, it is widely used throughout the world.
This is an article that contains about 3R photo size in mm, cm, inch. This is the dimension of length and width of a photo or image or frame. It is included into the category of R Series as standard. It is commonly used on photo paper types for printing photographs.