Am 27.06.2008 um 07:26 schrieb eagleskycloud: > But is DIN A3 same to A3? Is DIN A4 same to A4?Is DIN A5 > same to A5? > > DIN is standard of Germany.Is the size of DIN A3 is 297mm x > 420mm? Is the size of DIN A4 is 210mm x 297mm?
Yes, they are basically the same. The A series was first standardised as DIN 476 in Germany in 1922, was widely accepted in other countries later and then, around the 1970s, standadised internationally as EN ISO 216. The success is based on the good geometric properties: A0 has a size of 1 m^2 and a ratio of (approximately) 2^0,5=sqrt(2) (larger to smaller side), and from there you get each smaller format [A1 from A0, A2 from A1, ...] by halving the larger one parallel to the short side, and the ratio of the sides always remains the same. However, DIN 476 demands tighter tolerances: +/- 1,0 mm (for dimensions up to 150 mm), +/- 1,5 mm (for dimensions from 150 mm to 600 mm), whereas ISO allows 1,5 mm and 2,0 mm, respectively. So some rounding is acceptable. But you are right, you should try to get the paper size as precisely as possible from the scanner. See <http://en.wikipedia.org/wiki/Paper_size> for details, its all well described there. HTH -M
