BetterPhoto Q&A
Category: New Questions

Photography Question 
Michael Warnock
BetterPhoto Member Since: 1/3/2005
 

A4, A5...what does it all mean?


Hello all, can anyone explain what "a4 print" or "A5 print" means? Is this a way of indicating size? If so, when would one chose A4 over A5 and vise versa? Also, I assume that there is also A0 to A3 as well. What do these mean?

Cheers,
Mike Warnock.


To love this question, log in above
6/12/2005 9:52:46 PM

 
John Sandstedt
BetterPhoto Member Since: 8/8/2001
  It refers to the size of the paper you select. Standard paper is usually 8.5 X 11 in the US. Standard paer in England, for example, is slightly larger and designated A4 or A5 [forget which.

Your printer's just allowing you to easily set the printer driver.


To love this comment, log in above
6/13/2005 5:28:23 AM

 
John Rhodes
BetterPhoto Member Since: 2/24/2005
  Mike, the "A" sizes are European standards. Dimensons below are in mm's.

A Series Formats
4A0 1682 2378
2A0 1189 1682
A0 841 1189
A1 594 841
A2 420 594
A3 297 420
A4 210 297
A5 148 210
A6 105 148
A7 74 105
A8 52 74
A9 37 52
A10 26 37

A3 paper is similar in function to U.S. tabloid size paper, 11" x 17".
A4 paper is similar in function to U.S. letter size, 8.5" x 11".
A5 paper is the half-sheet of A4 paper.

Best to shop for papers in inch x inch format; less math.

VR

John


To love this comment, log in above
6/13/2005 5:37:43 AM

 
Jon Close
BetterPhoto Member Since: 5/18/2000
  The "A" sizes are all in the same proportion - 1 : 1.4142 (square root of 2). It's a clever system in that each smaller size is obtained by cutting the next larger size in half. It theoretically produces less waste in many printing applications, but it's not a proportion that is as commonly used in photography as 1:1.5 (ie. 2:3 of 35mm), 1:1.3333 (645 medium format, 4:3 digital & TV), 1:1.25 (4x5, 8x10),...


To love this comment, log in above
6/13/2005 7:13:52 AM

 
Michael Warnock
BetterPhoto Member Since: 1/3/2005
  Thank you all for responding. So, with regard to image size, if I set my D-Rebel image quality to "Small" which the manual refers to as A5 print size or set it to "Large" which the manual refers to as A4 print size will there be any difference between prints made from "large" or "small" settings (other than effective resolution)?

Till now I have had it set to "Small" but that is not taking full advantage of the cameras resolution capabillities. I have changed the setting to "Large" but am wondering what the concequenses will be.

Mike.


To love this comment, log in above
6/13/2005 8:43:02 AM

 
Log in to respond or ask your own question.