I can confirm beyond a shade of doubt that Pencil input is not up to the standard of accuracy of Wacom's Intuos Pro or Cintiq line--if you're accustomed to Wacom's standard, I highly recommend purchasing a Pencil from somewhere that has a generous return policy so you can see how it fits within your own workflow. I have a light touch and work heavily with thin, tapered lines and feathered strokes, and there's a real weak point there, which is only exacerbated by the lack of a cursor when hovering. Notes does the best job of "faking" stroke accuracy, but it's not viable for finished work, of course.
I will agree that it is worlds better than any Bluetooth stylus on non-Pro iPad models, and for people who favor different styles of mark making, it may very well serve as a viable Wacom substitute! I wish it worked better for me because I hate Wacom the company with a passion![]()
There's no question that Wacom's Intuos/Cintiq digitizers are still better right now, but I'm impressed with how close Apple's come on their first try. The Pencil clearly beats the two other mobile options (Wacom Penabled and N-trig), which is the real comparison for most people since the only portable Cintiq is the size and weight of a 15" MBP.
What I'm hoping is that the iPP (and SP) will force Wacom to be more competitive and release a good Cintiq Companion. One that could be at least marginally competitive as a Windows tablet, instead of a poor Windows tablet with a good digitizer.
Well the Apple Pencil certainly doesn't have the ridiculous input latency the Surface Pro 4 has. This - for me - looks unusable, but I recognize not everyone will have problems with it...
Go to 2:10 in this video. That is some CRAZY lag.
It's not fair to judge input lag unless you either have a hardware cursor (iPP does not) or are using the same brush engine. The problem is that you don't know how much lag is from the pen tech and how much is just that particular software brush.
SP4 really shouldn't have particularly bad lag considering that it's known to be ~30ms faster than the Wacom Penabled tech in the SP2 (Anandtech SP3 review). iPP may be faster, but only because of its predictive algorithm.
Latency crown goes to whoever's first to realize that vsync = lag. Even Windows has forced vsync at the desktop level (can't disable since Win 7). Triple buffer vsync can easily at 50ms just to avoid screen tearing.