Other Promotion not the same as iPad, it changes how you scroll which can be slower, am I wrong

[Kylo83]

so on the keynote they said the promotion changes how you scroll, so if you scroll slowly it goes to 10hz so it could be slower than the always 60hz on normal phones, I thought on iPad all the scrolling is 120hz no matter how small or long you scroll, am I wrong

 

[Kylo83]

scrolling might be slower than 60hz now

 

[UKapple73]

That would look really weird, say when your scrolling on a website, it’s smooth when going fast , but when you slow down it goes to 10-20hz, would look really laggy, can’t imagine Apple would implement it like that

 

[Kylo83]

That would look really weird, say when your scrolling on a website, it’s smooth when going fast , but when you slow down it goes to 10-20hz, would look really laggy, can’t imagine Apple would implement it like that

thats what they said tho, im worried it will look worse than before, as they wanna save batt life, the iPad doesn't change to 10hz

 

[cygy2k]

Watch the video. It adapts the refresh to how fast you scroll - i.e. if you scroll slow, why waste refreshes that won't reflect any change? It's called adaptive refresh and it's dynamic based on user. It won't slow the actual scrolling or visuals of it.

 

[Kylo83]

My god people, watch the frickin video. It adapts the refresh to how fast you scroll - i.e. if you scroll slow, why waste refreshes that won't reflect any change? It's called adaptive refresh and it's dynamic based on user. It won't slow the actual scrolling or visuals of it.

but the iPad scrolling speed is 120hz no matter how fast, if you scroll and its slow it won't even be 60hz so will look slower

 

[cygy2k]

Nope, not how it works. The iPad at 120 is just wasting cycles where the info is the same in those scenarios.

 

[hovscorpion12]

Refresh rates are not important when reading. Refresh rates matter when scrolling or gaming. Having dynamic 120hz allows for better battery life vs constant 120hz all the time.

for reference all Android phones with 120hz display are adaptive like the 13 pro/pro max.

 

[Kylo83]

Refresh rates are not important when reading. Refresh rates matter when scrolling or gaming. Having dynamic 120hz allows for better battery life vs constant 120hz all the time.

for reference all Android phones with 120hz display are adaptive like the 13 pro/pro max.

but would the scrolling look less smother then on iPad Pro scrolling slowly

 

[Kylo83]

like scrolling from page to page is butter smooth on iPad now on iPhone it will go lower than 60hz and will look slower

 

[CoronaOnTap]

but would the scrolling look less smother then on iPad Pro scrolling slowly

It doesn’t automatically drop down to 10Hz when you’re scrolling slow. It could be 30Hz or it could be 60Hz depending on how you’re interacting with the iPhone. You wouldn’t notice any diff.

 

[Stratus Fear]

like scrolling from page to page is butter smooth on iPad now on iPhone it will go lower than 60hz and will look slower

You're thinking about this all wrong.

Example: say you're scrolling so slowly that the content won't shift visibly more than 30 times in a second. You wouldn't need to refresh at more than 30hz in that second. Refreshing at a higher rate in that time slice won't make the scrolling look any smoother, it would just duplicate frames and waste battery. This is the point of the feature. It isn't going to make anything less smooth, and scrolling content is merely an example - any content that doesn't have enough motion to require a higher refresh in that instant will be refreshed at a lower rate. The iPad already does this too, it is not locked to 120hz.

 

[Kylo83]

You're thinking about this all wrong.

Example: say you're scrolling so slowly that the content won't shift visibly more than 30 times in a second. You wouldn't need to refresh at more than 30hz in that second. Refreshing at a higher rate in that time slice won't make the scrolling look any smoother, it would just duplicate frames and waste battery. This is the point of the feature. It isn't going to make anything less smooth, and scrolling content is merely an example - any content that doesn't have enough motion to require a higher refresh in that instant will be refreshed at a lower rate. The iPad already does this too, it is not locked to 120hz.

yeah but iPad is 60 to 120 this is 10 to 120 so could be slower swiping from page to page

 

[CoronaOnTap]

I’m not sure if you’re deliberately trying to misread everyone of us but you keep repeating the same despite others trying to explain as detailed as possible like @Stratus Fear did.
To better understand how this works you might want to read about how display refresh rates work and how 120hz capable screens display lower refresh rate content.

 

[Kylo83]

I’m not sure if you’re deliberately trying to misread everyone of us but you keep repeating the same despite others trying to explain as detailed as possible like @Stratus Fear did.
To better understand how this works you might want to read about how display refresh rates work and how 120hz capable screens display lower refresh rate content.

Your not understanding I would rather 120hz when scrolling no matter how slow or fast like the iPad, they are doing this because of batt life and the iPhone can go down to 10hz so like I said if you scroll from page to page slowly it won’t seem smooth like it does on the ipad

 

[maternidad]

Your not understanding I would rather 120hz when scrolling no matter how slow or fast like the iPad, they are doing this because of batt life and the iPhone can go down to 10hz so like I said if you scroll from page to page slowly it won’t seem smooth like it does on the ipad

Your preference is mistaken; if scrolling sufficiently slowly, there's no difference

 

[CoronaOnTap]

Your not understanding I would rather 120hz when scrolling no matter how slow or fast like the iPad, they are doing this because of batt life and the iPhone can go down to 10hz so like I said if you scroll from page to page slowly it won’t seem smooth like it does on the ipad

Actually you’re not and it won’t.

As @Stratus Fear explained, if the display is set to a higher refresh rate than the content requires then the processor adds duplicate frames to make up for the diff. They set it to 60Hz minimum in the iPad Pro cuz of the bigger battery. But on the iPhone you’re gonna need to conserve as much battery as you can which is the whole point of dropping it down to 10Hz when not needed. Like you don’t need to refresh it at 60Hz when you’re reading an article and only scrolling two lines at a time as there won’t be any perceivable diff. I’m not sure how much more simpler I could make this.

 

[Stratus Fear]

yeah but iPad is 60 to 120 this is 10 to 120 so could be slower swiping from page to page

Your not understanding I would rather 120hz when scrolling no matter how slow or fast like the iPad, they are doing this because of batt life and the iPhone can go down to 10hz so like I said if you scroll from page to page slowly it won’t seem smooth like it does on the ipad

Oh I think he understands.

This really doesn't work the way you think it does. The display driver knows the rate of change of the content before it pushes the content to the display itself. It's going to set the minimum refresh rate needed to display all changes in the content it's sending to the display. There literally will be no dropped frames. If the rate of content change is only 10 frames in a second, the display will drive at 10hz. If the content over the next second suddenly has a much higher rate of change, say, I dunno, 107 times, it's going to drive the display at 120hz. If it's 58, it's going to drive it at 60hz. There is no "catch up" problem as you seem to be thinking; the display subsystem knows the rate of change of content before it ever gets pushed to the display.

 

[Kylo83]

Oh I think he understands.

This really doesn't work the way you think it does. The display driver knows the rate of change of the content before it pushes the content to the display itself. It's going to set the minimum refresh rate needed to display all changes in the content it's sending to the display. There literally will be no dropped frames. If the rate of content change is only 10 frames in a second, the display will drive at 10hz. If the content over the next second suddenly has a much higher rate of change, say, I dunno, 107 times, it's going to drive the display at 120hz. If it's 58, it's going to drive it at 60hz. There is no "catch up" problem as you seem to be thinking; the display subsystem knows the rate of change of content before it ever gets pushed to the display.

I still think I pad pro will scroll better as its faster at the minimum

 

[Stratus Fear]

I still think I pad pro will scroll better as its faster at the minimum

Variable refresh rate technology has existed before ProMotion came along (e.g. G-Sync) and what you describe was never a problem before. I have seen my PC drop refresh rate as low as 4hz on an idle desktop and boost right back up to 144 with mouse activity. No choppiness is observed. I'm not sure why you think this will not also be the case on the iPhone, but I can assure you that your concerns are unfounded.

 

[CoronaOnTap]

I still think I pad pro will scroll better as its faster at the minimum

Again, not how the technology works. Unless you have a high speed camera, you won’t notice any difference in the rendering. The processors are quick enough to calculate what refresh rate works best and can ramp up or down dynamically.

 

[UKapple73]

I still think I pad pro will scroll better as its faster at the minimum

I think the point you’re missing is that if the content is moving so slowly you won’t notice the difference between 10,20 or 60 hz