This is precisely what I meant by large motor action. When I draw, I
tend to move only my fingers (known as fine motor action) and draw in
a very confined area. A small tablet serves that need very nicely.
On the acceleration thing: notice when you are using your mouse, that
if you “flick” the mouse quickly in a direction, the cursor will shoot
a huge distance across the screen; and if you move it slowly in a
direction, the cursor will travel a much shorter distance on the
screen. This property is known as acceleration in mouse lingo, and it
is the reason why you can have ridiculously large screen (as I do –
two 20" apple wide-screens side-by-side) and still navigate across
them on a comparatively-small mousepad without lifting the mouse a
dozen times. This is also one of the things that Windows (any version)
characteristically gets tragically wrong.
On a humongous tablet, there is no such thing. Instead, there is a
direct mapping of one pixel on the screen to an equivalent x/y point
on the tablet. (Most tablets are ridiculously high-resolution, since
they are basically analog devices with a simple map to the digital
world, and that map can be made any resolution necessary on the fly.)
So when you want to move to the top-right corner of the screen, you
have to reach there with a dramatic sweeping gesture of your entire
arm. While this works fine on the stage, it takes considerable
practice to attain the same degree of precision that you naturally
enjoy when using your fingers to move a few centimeters, with the
result that you tend to overshoot your target, then have to adjust. If
you touched down rather than coming to rest in a hover over the spot
where you want to fine-tune your approach, you may find that you
trigger some other action than you wanted to.
I find the whole thing rather tiring for long periods of time,
probably because I am really well attuned to the mouse and it’s
natural ability to distinguish between hover and click or click+drag.
I tend to use the tablet only when I need it – for pressure-sensitive
brushes in Photoshop or Illustrator, primarily – and don’t use it for
Finder (shudder) at all.
Walter
On Apr 17, 2010, at 11:22 AM, Paul Bradforth wrote:
it was awful, you were forever swinging your whole arm in arc to
get anywhere.
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