I get horrible calibration with this tool and wanted to ask if the following is normal: are the right-most points supposed to be right on the edge of the screen with no margin from the edge? This is contrary to the left side where there is at least 2 mm distance from the edge, making this an asymmetrical setup.
The line placement is normal. It allows to achieve 2 things:
-> Pen works edge to edge
-> The pen tracking is greatly increased in that area, which is much needed for scroll bars, accessing the bottom right most "show desktop" button, and close, maximize/restore, and minimize buttons. While I do know that tracking in that area isn't great, that is because its the near end of the digitizer, and the pen is out of the area. Keep in mind that the entire pen if being tracked, so it's Wacom technology limitation of the pen. The calibration edge it's just to try and get the most of it.
The digitizer is actually larger than the screen. ~50% of the black border is the digitizer. You can test this by place thin pen on the black area and move it, you'll see that the cursor dot will move to teh edge of teh screen, and still be track, but stops as soon as you pass 50% of the black border.
For the best calibration, I recommend shifting the pen on every point so that the tip doesn't pass the center point of the crosshair "+".
In other words, the red mark of the picture bellow, shows where the tip of the pen is supposed to be hitting at
So, for the right most side of the screen, you'll hit a bit of the black area. That is normal and expected (by me), to be done.
Keep in mind to always hold the pen as you write on the screen.
I also recommend the 80 point calibration rather than the 273 or 308.
-> 273 point calibration is a modified version of the suggested (by people, not Wacom or Microsoft) generic for all tablets, which I modified to work edge to edge with the Surface Pro 2, as it didn't (as the calibration wasn't done for teh Surface Pro specifically, just generic for all tablets). The problem with 273 point calibration is that you don't allow much interpolation between point, so if you don't do a perfect calibration, when you write, you'll find that the pen will move up and down, and left to right too much, not allowing to write properly. Movement is fine, as this is a limitation of Wacom digitizer. You don't see it when you use Wacom's normal product as you don't write directly on the screen. In addition the digitizer of the Wacom tablets is superior. and also MUCH larger. notice the big fat plastic around the area of drawing, which is actually a continuation of the digitizer to track properly on the edges.
-> The 308 point calibration, is the 273 with more lines on the edges, to get more precision.
-> The 80 point calibration is one restarted from scratch by me, and a lot of time and patience, and calibration over and over and over again, so built this to get it specific for the Surface Pro 2, which allows a lot more interpolation, and easier to calibrate (less points, will make you less tired, to allow you to spend more time to hit the targets better). Is the 80 point calibration perfect? No. But it is so far the best I came up with, which on my side, offered far better results than 273 and 308 point calibration. However, I offer the others just in case someone would prefer the others.
Another thing to note, is that I assume right handed calibration. I have never tested my calibration for left handed, nor got any feedback from anyone using the device left handed with my software. I tried to do it, but I can get fine motor skill to do a good calibration, and really judge and measure how it is when you wright. Remember that having the cursor on the screen shift a bit to the top, or bottom, left or right as you move it on the screen is fine, as long as you can write fine and draw lines just fine.