4 ms·
It's better than any e-ink device for sure and it's competitive with the iPad Pro. I think the latter now has somewhere around 15-20ms of lag? So it's close. B
by devindotcom 6y ago
It's better than any e-ink device for sure and it's competitive with the iPad Pro. I think the latter now has somewhere around 15-20ms of lag? So it's close.
But honestly they're different devices. Similar in many ways of course but different too. I don't think it's really apples to apples.
- LegitShady 6y agoIpadOS cut pencil latency to 9ms.
- why_only_15 6y agoThat number was calculated by taking a high-speed camera and watching how long it took the line to catch up with the pencil. They cheat on the metric by juicing up the prediction. You can see this by flicking the pencil and then picking it up -- the line will go farther than you intended. And if you change directions, the line will take more than 9ms to catch up with you.
- LegitShady 6y agoDo you normally draw or write by flicking the pencil? Prediction that increases the speed usefully is not cheating
- braythwayt 6y agoApple are cheating the 9ms lag measurement the way speculative execution and aggressive cache population are cheating performance benchmarks. In general, this point makes me think of computational photography. If you have extra computing power, you can do things that are synthetic, but nevertheless real enough to deliver satisfaction, in real time.