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Scrolling on iPad 3 has wobble/wave effect
- Thread starter bamdion
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This is not a fault, limited to iOS devices, or a v-sync issue.
If V-Sync was disabled in iOS, you would see screen tearing, where parts of the screen are updated out of sync with the refresh rate.
This is an LCD problemall LCD displays do this.
It happens because LCDs are addressed in lines, rather than updating the entire LCD panel at once.
There are a number of reasons why it often isn't noticed, and why it's more noticeable on the new iPad than other displays, however.
If V-Sync was disabled in iOS, you would see screen tearing, where parts of the screen are updated out of sync with the refresh rate.
This is an LCD problemall LCD displays do this.
It happens because LCDs are addressed in lines, rather than updating the entire LCD panel at once.
There are a number of reasons why it often isn't noticed, and why it's more noticeable on the new iPad than other displays, however.
- Most LCDs are used horizontally, so when you are scrolling up and down a web page, you don't notice anything happening because it's in the same direction that the screen updates.
iOS devices are primarily used in the portrait orientation when doing things like browsing websites, so scrolling the page is moving perpendicular to the display panel, and either the left or the right-hand side will appear to lag behind the other. You should notice that if you flip the iPad upside-down, the opposite side starts to "drag" behind.
If you are at a desktop computer, open up a window and make it the full height of the display, but quite narrow, and quickly drag it left and right across the screen. You should be able to see that the bottom half of the window lags behind the top, and it skews as it moves.
It's very similar to the difference between CCD and CMOS sensors, if you're familiar with the rolling shutter or "jello effect" in cameras.
Plasma displays do not exhibit this effect, because the entire panel is updated at once, rather than line-by-line. (though there are a host of other artefacts there I won't go into) - The new iPad has a lot more pixels than most other displays, so there are more lines to be addressed. This means it takes more time to get from the first line to the last, and so the delay is more pronounced than on the 1024x768 iPad 1/2, or a 1920x1080 HDTV. (almost 50% more lines!)
- It's a touchscreen device, so the effect is far more pronounced when the screen doesn't appear to be keeping up with your finger, rather than using a mouse where your inputs are "disconnected" from the display itself.
I could not see it thru.........
The pink and yellow tint on my 3-3's before I gave up and went back to my 2
My buddy told me he sees it on his -not all the time though
But as usual the fanboys have attacked you
Go back to the apple store and see what there display ones do
And hope you do not get a genius like mcdj
The pink and yellow tint on my 3-3's before I gave up and went back to my 2
My buddy told me he sees it on his -not all the time though
But as usual the fanboys have attacked you
Go back to the apple store and see what there display ones do
And hope you do not get a genius like mcdj
Keep trying and you might, one day, be able to do that
i like ya, fella. :,)
@op, havent been able to replicate this.
One of the "two" was you and that does not count
No reason for your usual "crude reply". If it is ment to run this "newbie" off, it will not work.
Lol classic...don't mess with the Demi-bully
I see mcdj is, as per usual, endearing himself to the MacRumours community.
No harm done. He enjoys tossing his weight about, makes no difference to me. Over 4k of useless posts!
I'm not so bad. I just type that way.
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No harm done. He enjoys tossing his weight about, makes no difference to me. Over 4k of useless posts!
If you have read every single one of my posts, I feel very very sorry for you. Assuming you haven't, any time you want to pipe down will be fine, noob.
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I see mcdj is, as per usual, endearing himself to the MacRumours community.
Funny, I've been here for years, and only with the release of the iPad 3 and the resulting arguments has anyone ever said a single negative thing about me. Your "per usual" comment applies to 1 month out of the past 5 years.
Reading through your posts you seem like an intelligent poster, however your "passion" regarding this specific subject seems to have clouded your interpersonal skills and your posts can seem rather dismissive and a little barbed to those that don't agree with your POV. I say this in all good faith on my part and I hope you don't construed this any other way.
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I noticed this years ago the first time I used the iPad 3. I think I even noticed it on the iPad 2. I see it on my iPad mini 2 almost daily (just opening apps when in landscape, I see it). For some reason I only see the wobbling when I'm using my iPad in landscape to the right (home button on left). I think it has to do with how the panel refreshes from the top down (looking at the iPad in portrait)