Forum: Photoshop


Subject: I wanna put this baby to bed ! (Print res help ?)

Gini opened this issue on Feb 18, 2007 ยท 18 posts


Gini posted Sun, 18 February 2007 at 6:17 AM

Can someone kindly correct or confirm what I've written below....... I 'm pretty sure I understand the concept but maybe I still don't o.0 Please don't give me more web links.... I've looked at loads and now I'm just trying to put it all in my own words to understand it. 1) ppi/dpi doesn't really matter until an image is actually going to be printed out. Simple definitions : 'ppi' refers to on-screen resolution and 'dpi is the term used by printers regarding printing resolution. 2) the fact that Poser7 only renders at 72dpi DOESN'T MATTER because if you render big enough at that resolution, say 33x34 inches@72ppi you are able to PRINT that image at roughly 8x8 inches 300ppi....... the fact being that you have the same number of pixels in both images but for the 300ppi one they are concentrated in an area about a 5th the size, hence the higher resolution. 3) -If I multiply 2400x2448 thats the total number if pixels in the image ? -If I divide 2400X2448 by my desired res of 300, I get 8x8.16......... so if I send that original 33inchx34inch @72 ppi image to a printer it will be printed at 8x8 inches @300dpi ? Or 10x10"@240 dpi ? 4) The formula is : each desired size of final image (8"x10") x desired dpi(300) = the pixel dimensions I need to tell Poser to render at (=2400x3000 @72 dpi) A biggie for a sunday morning, I know. A common complaint about P7 is it only renders at 72dpi (considered a bug ) so some folk claim it can't be used it you are working in it with the intent to actually print . I personally render along the sizes I mentioned above and get excellent prints. Poser actually does the math for me... I input 8"x8" at 300dpi in the render dimension boxes, it renders out an image at 33"x34" @72 ppi. Same thing. I've tried a couple of times to explain it to counter the gripes about "it's a major bug, can't use 7 because my publisher is unhappy with the low res output, my renders have jaggies , jumping through hoops to make Poser do the resolution I want, too much math," etc. But I give up explaining. Now I just want to make sure I am understanding it for Myself. ( It's also an ongoing conversation where I work..... try getting fashion designers printing out illustrations/photos to understand this !! Lol If I can go into the design studio tomorrow and spit this out in simple english I might see some sharp prints bigger than a postage stamp. )

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