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Optimized for Retina Display settings?

Are their settings to optimize a book for the new iPad retina display? At this moment, the updated applications still functions as if the resolution is 1024x768. Perhaps I a missing some new option somewhere?

Posted on Mar 7, 2012 3:04 PM

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44 replies

Mar 7, 2012 3:24 PM in response to K T

I'm not sure this is correct. At present, if I import an image that is, for example, 768 pixels tall and I set it to display at "Full Resolution" it fills the height of the screen in landscape mode. For the new retina display a graphic of that size would fill half the screen, not the full height.

Mar 7, 2012 4:21 PM in response to K T

The screen is the same size in inches, not in pixels. An image that is 768x1024 pixels fills the iPad 1 or iPad 2 screen. On the iPad 3 screen that same image would either cover a quarter of the screen, or would have to be scaled up which would provide no appreciable visual improvement.


At present, as I said, an image 768 pixels tall fills the width (or height, depending on orientation) when set to full resolution using the inspector tool. Something about this is not correct.

Mar 7, 2012 4:31 PM in response to soulhill

>On the iPad 3 screen that same image would either cover a quarter of the screen, or would have to be scaled up which would provide no appreciable visual improvement.


Not going to happen, sorry. I have no idea where that idea came from outside of maybe decades old computer display habits...iBooks are on iOS, rectangular pixels and all.


And as I said...there is nothing additional you are required to do because of the new iPad. There is no magic or secret sauce. Existing books are not going to look any different except better.


I've been recommending retina-grade images as 132ppi/dpi for use w/iBA on iPad 2 for some time now. That is the resolution Apple recommends to devs for images w/our apps on retina, including the 4s, which is tecnically higher than a new iPad.


You can test your own content with various ppi if you like, but you'll only see a higher quality display 🙂

Mar 7, 2012 4:37 PM in response to K T

I'm interested in this as well... It seems as though this is a 'change' in that on the iPad / iPad 2, an image as part of a gallery when shown in full screen will be initially displayed at it's actual pixel size. A 500x500 px image will be centered on the screen, and will not fill it.


With iPad3, KT, are you suggesting that they'll just pixeldouble that 500x500 image so it stays the same size? They (Apple) seem to have tried HARD to keep us authors from presenting content in a way that would cause un-atractive cropping or scaling...


Without a device to test with (or do you have one... 😉 ), how can you be sure what they'll do?


Chris

Mar 7, 2012 4:47 PM in response to K T

KT, your logic eludes me. When you say "It's not going to happen" I don't understand what you mean.


Lets look at it with math, just dealing with the dimension of height:


The screen on the iPad 2 is 768 pixels high in it's landscape orientation.

The screen on the iPad 3 is 1536 pixels high in it's landscape orientation.


Therefore an image that is 768 pixels across will cover the entire height of the iPad 2 display.


That same image, displayed at 768 pixels on an iPad 3 would not cover the full height because the full height is 1536 pixels. 1536 is greater than 768.


Are you disagreeing with this? If so, please explain because I certain one of us is very confused and I hope it isn't me.


Message was edited by: soulhill for a spelling correction

Mar 7, 2012 4:52 PM in response to phantem

Does anyone believe Apple would ship a device that would make existing content look like crap overnight?


This would immediately spoil that beautiful new model's reputation, while ticking off every user who could no longer enjoy the content they paid for and all the devs and authors that worked to make it available.


The store would be off limits to anyone with that new device until apps/books just for it were well stocked...see that happening? Do you think Apple would sell a new device without content that looked good on it already in the store, as-is?


I have the latest iOS code and tools as well as access to the most recent documentation for iOS as of 3.7.2012. NDA prohibits detailed discussion here in the public forums otherwise, sorry. I've been supporting retina w/my apps since the iPhone 4 came out, and that code and content is good to go for the new iPad.

Mar 7, 2012 4:53 PM in response to soulhill

I'm going to throw my 2 cents in : )

and yes, with out the device we well not know for sure.


images that are 1024 x 768 will effectively be doubled in resolution to 2048 x 1536 to fill the new ipad screen.


Normally this would give you a blurry image.

But the key is that the new ipad is also reducing it 50% (Because the screen size is the same in inches)


so it is not like doubling the pixel resolution on your image and then looking at it on the same monitor (which would be blurry)


so the bottom line (in my opinion) a 1024 x768 image will look the same on a ipad 2 and a new ipad.


a 2048 x 1536 image will look a little better on a new ipad, (maybe a lot better if you have good eyes)

Mar 7, 2012 4:58 PM in response to K T

You make a good point about damaging the existing content.


Interestingly, there is an updated version of iBooks Author which is 'Enhanced to create books that take advantage of hte Retina display on the new iPad'


Based on this, i'm guessing authors will have to resubmit their books to have true, retina optimized content...


Thanks also to Barnheisel -- that explaination jives with my sensibilities 😁

Mar 7, 2012 5:21 PM in response to phantem

The new program is not going to make present content look worse. A 1024x768 image on the iPad 3 should look identical, but not better, than it did on the iPad 2. This has nothing to do with my question. I am looking to know how I can make my book take advantage of this additional resoultion.


Todays update states that the iBook Author program has been optimizmed to take advantage of the new display resolution — but how?


The logical thing would be to double the resolution of images where possible — a step I don't wish to take if iBook Auther is not truly optimized to take advantage. (i.e., all full screen images that are 1024x768 are replaced by 2048 x 1536 images)

Mar 7, 2012 5:33 PM in response to soulhill

...maybe iBA 1.1 is all about sharper text....or cleaner video...


>A 1024x768 image on the iPad 3 should look identical, but not better, than it did on the iPad 2.


As for better... or not.... Tim Cook said, during today's event "Everything has been updated, but as you remember when the iPhone 4 went to the retina display, developers didn't have to do anything and their apps looked better." I'm inclined to believe him 🙂

Mar 7, 2012 5:31 PM in response to soulhill

Not having the new iPad to test, nothing is for sure. But based on how iPhone retina display works...


The iPad will still still have the logical resolution of 1024x768 points. Each point correspond to 4 pixels. So now whatever you specified is based on points - so when you put in a 320x200 pictures, it is possible that iBA is trying to use the 640x400 pictures (just possible, as nobody knows how it works). This is how Safari works in iPhone too - the text is rendered in 4x, pictures are taken in 4x resolutions and display to you.


It is highly possible that anything in photo gallery is automatically in highest resolution.

Optimized for Retina Display settings?

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