need help understanding units of measurement - cs3

hi there,

 

i want create pdf document.

 

i'm working images in photoshop, , doing page layout in indesign.

 

the document setup confusing me, in id - because i'm not doing 'print' speak, it's hard work out pixel dimensions.this screen document, i'll never print it.

 

i tried using pixel millimeters converter (no idea picas , points are), , punched number document. then, when export out file - document of expected size - 1280 x 900, @ least thats want now. fine.

 

but then, confusing thing is... when creating images in photoshop - larger expected document size. around 3000 x 2000 pixels... yet when 'place' command in indesign, images incredibly small.much smaller should be. given final output size of pdf document is.

 

i'm sure going smoother process in cs5, because things have sure changed lot in last few years regard design. program more 'screen design' centric.

 

but in case, can me figure out how head around these issues, @ least before can afford copy of cs5.

 

regards,

 

matt

indesign not measure documents in pixels, has have physical size. but, if save images @ 72 ppi , work in points, can use points pixels. images using have ppi (pixels-per-inch) value higher 72 ppi. 3000 x 200 pixel image have physical size of 10″ × 6.67″ if image’s resolution 300 pixels per inch. scale image 416.67%, produce 72 ppi image after scaling, or change image info in photoshop 72 ppi, turning off resample in dialogue.

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