Talk:Photographic printing

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This article is very short. Would any experts care to lengthen it? Thank you. STEPHEN

[edit] help?

I'm looking for information on how a print is exposed. It seems like that information ought to be in this article. Specifically, I want to know the chemical process that causes photgraphic paper to end up with light and dark areas according to the negative. -Freekee 18:07, 6 January 2007 (UTC)

There are many, see List of photographic processes. Jpatokal 10:22, 7 January 2007 (UTC)

[edit] Paper Sizes in Inkjet Photoprinting

I looked the aviable printing media sizes of my Cannon Inkjet printer and discoverd beside some japanese formats.. the type of "L"(89mm x 127mm) and "2L" (127mm x 178mm) it seems this is the common R3 format for photos but with another now very common used name in actual printer drivers. —Preceding unsigned comment added by 84.58.40.108 (talk) 11:36, 30 December 2007 (UTC)

I just spent way too long trying to figure out how the Japanese photo sizes work... I think I figured out most of it, but I'm still rather baffled by how a 457×560 mm sheet (which everybody agrees [1] is the base size) can map into the nP sizes. Jpatokal (talk) 09:31, 3 March 2008 (UTC)

[edit] inches vs cm

8x10 is not "called 20x25cm worldwide". Its either cm or inches, and these are slightly different sizes and aspect ratios.Justinc (talk) 22:33, 2 March 2008 (UTC)

The article seems to assert that 8R prints are sold as "20x25cm", even though the physical size of the print is 20.3x25.4 mm. Then again, that rounds down to 20x25 if you take two significant figures, so it's not necessarily even incorrect. Jpatokal (talk) 07:55, 3 March 2008 (UTC)

Similarly, in the UK the standard size is 6"x4" and it's called that too, from my recollection. If anyone agrees, please edit the article. GoldenTie (talk) 18:06, 11 March 2008 (UTC)