2-1/2 x 3-1/2 was a quarter 5x7 plate just as 3-1/4 x 4-1/4 was a quarter 6-1/2 x 8-1/2 plate and 4x5 was a quarter 8x10 plate. Those were the 2:3, 3:4, and 4:5 ratios that are still pretty much standard today and go back to the early days of photography when those full plate sizes were the standard size pieces of glass that were available.
P. J. Alling wrote: > Heck, I've finally learned to compose for the 35mm frame, and unlike > some people I know the 6x9 format well predates the popularity of 35mm > double frame cameras. > > John Sessoms wrote: >> From: Toralf Lund >> >> >>> graywolf wrote: >>> >>>> Or something like a 24x30 or 24x32 frame? >>>> >>>> >>> Or 24x28, even? >>> >>> Yes, a change of aspect ratio would be interesting. I wonder what the >>> reaction would be... >>> >> Stunned horror followed by extreme outrage. >> >> > > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
