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I'm trying to understand how to best save my images for the new Retina Display. I use Adobe Illustrator for my work. Should I be do either of these to save my images, or something else?
1) Resize the vectors images by 200% (so a 320x480 is now 640x960), reset my crop marks and save the image as a PNG. Should the image be 72DPI still?
2) Create a new document at 320x480 with a 300 DPI and move my images into that, then save the image as a PNG.
Also, I typically use the "Save for Web & Mobile Devices" options, which I believe is 72DPI. Should I stop doing that?
Thanks for your help. If you don't work in Illustrator, still share your thoughts as I'm sure they are universal to the problem.
Okay, maybe there are no illustrator guys on here, but what are you guys doing it? Are you just ignoring the new iPhone and not updating for it? Are you waiting to see how your app will look on the iPhone first before making changes?
I'm trying to understand how to best save my images for the new Retina Display. I use Adobe Illustrator for my work. Should I be do either of these to save my images, or something else?
1) Resize the vectors images by 200% (so a 320x480 is now 640x960), reset my crop marks and save the image as a PNG. Should the image be 72DPI still?
2) Create a new document at 320x480 with a 300 DPI and move my images into that, then save the image as a PNG.
Also, I typically use the "Save for Web & Mobile Devices" options, which I believe is 72DPI. Should I stop doing that?
Thanks for your help. If you don't work in Illustrator, still share your thoughts as I'm sure they are universal to the problem.
Larry
Lars,
You should double your pixel count in both dimensions. I doubt if DPI matters, but to be safe, double that figure, you want twice as many pixels in height and width, displayed in the same space.
Regards,
Duncan C WareTo
Animated GIF created with Face Dancer, available for free in the app store.
I've just been reading more about this on the developer forums and the verdict seems to be that images are doubled in pixels as Duncan says, but they stay at 72 dpi.
I'm going to wait for now. Because 2 sets of images are needed (one normal, one high-res) the file size of my app would be crazy. I was already worried about the size of it before this came along.
MarkCPosts: 1,850iPhone Dev SDK Supporter, Registered Users
I'll wait to see what the apps look like on the new device before committing to updating the images with the @2x versions.
If the upscaling of existing apps is anything as good as the upscaling some Bluray players do on old DVD's, no-one will notice lol. I'm sure Apple will have done their homework - they don't want a quarter of a million apps looking like crap on their new baby.
Thanks for the reply guys. I'm actually happy enough with how the majority of the graphics came out, but it's really clear which text was part of an image and which was drawn directly on the new phone. I don't think it is a killer, but I will update certain images with upcoming releases, overall though I am happy to see it's not an emergency to upgrade.
btw, I'm sure others have seen this but they do have a good 50 minute review of this on the WWDC free documents and they go right along with what you guys are saying ~ 72DPI at double the pixels counts.
I duplicated my Art Boards and then doubled the size. Seemed to work well. You should be able to ignore the DPI since its really just a frame of reference unless used for printing. How I remind myself is that the web is 72DPI in theory yet if you take a 72x72 pixel image to different display sizes/resolutions etc, the graphic will measure different on each of them. Please correct me if I'm thinking wrong, happens a lot!
For an unrelated reason, I was saving my vector graphics as PDFs, and using them instead. I don't have my iPhone4 yet, but my business partner who does says the PDFs look great on the Retina Display, and I did not have to change a thing. Just another option if you already using vector graphics.
Lars
Posts: 180Registered Users
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What are you guys thinking about the new display?
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0 • Off Topic Insightful Disagree Dislike Like AwesomeYou should double your pixel count in both dimensions. I doubt if DPI matters, but to be safe, double that figure, you want twice as many pixels in height and width, displayed in the same space.
Duncan C
WareTo
Animated GIF created with Face Dancer, available for free in the app store.
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0 • Off Topic Insightful Disagree Dislike Like AwesomeI'm going to wait for now. Because 2 sets of images are needed (one normal, one high-res) the file size of my app would be crazy. I was already worried about the size of it before this came along.
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0 • Off Topic Insightful Disagree Dislike Like AwesomeIf the upscaling of existing apps is anything as good as the upscaling some Bluray players do on old DVD's, no-one will notice lol. I'm sure Apple will have done their homework - they don't want a quarter of a million apps looking like crap on their new baby.
Appvision
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0 • Off Topic Insightful Disagree Dislike Like Awesomebtw, I'm sure others have seen this but they do have a good 50 minute review of this on the WWDC free documents and they go right along with what you guys are saying ~ 72DPI at double the pixels counts.
Thanks again!
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0 • Off Topic Insightful Disagree Dislike Like AwesomebugWar by MechDog
<a href="http://itunes.apple.com/us/app/mytip/id346952226?mt=8&uo=6\" target="_b
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0 • Off Topic Insightful Disagree Dislike Like Awesome- Spam
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0 • Off Topic Insightful Disagree Dislike Like AwesomeWWDC 2010 Session Videos
Session 134 - Optimize your iPhone App for the Retina display
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