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iOS and MacOS / What dpi are you using when creating your pics for 960 x 640 images.

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ThrOtherJoJo
10
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Joined: 24th Mar 2012
Location: California
Posted: 27th Apr 2012 00:23
I'm just trying to get some idea what others are doing. I know it varies, but since I'm targeting iPhones and iPads first, I want to ask about the best practices.

FYI
My graphic artists are creating pics at 960 x 640 at 72 dpi.
bjadams
AGK Backer
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Joined: 29th Mar 2008
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Posted: 30th Apr 2012 10:12
for iphone use 960 x 640 at 72 dpi.

for the new ipad its 2048 x 1536 at 72 dpi. ipad2 is 1024 x 768 at 72 dpi
Rich Dersheimer
AGK Developer
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Joined: 1st Jul 2009
Location: Inside the box
Posted: 30th Apr 2012 18:15 Edited at: 30th Apr 2012 23:15
dpi? Dots Per Inch? That's for printing. A 960x640 pixel image is always going to be 960x640, no matter what dpi you work at. It will PRINT at various sizes, depending on the dpi, of course, but if you're not working in print, any dpi will work, it just adjusts the size of a printed image. 72 dpi is fine.

Having said that, if you start out with an 8x10 INCH image, then dpi will certainly affect pixel width/height and file size. Just use pixels as your size measurement, and dpi doesn't matter.

EDIT: BTW, the new iPad is listed as

2048-by-1536-pixel resolution at 264 pixels per inch (ppi)

and the iPad 2 is

1024-by-768-pixel resolution at 132 pixels per inch (ppi)

Screen ppi is similar to print dpi, pixels per inch is the density of the display, thus the new iPad has more pixels, but is still the same size device as the iPad 2. Neither one has any effect on the size of the graphics you make for them, only the number of pixels in width and height matters.
ThrOtherJoJo
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Joined: 24th Mar 2012
Location: California
Posted: 3rd May 2012 01:40
Thanks! That helps a bunch.

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