No problem, I either went into full depth or mentioned it in passing whenever some thread's context warranted it, and linked to the original post. I never got enough feedback till now to figure out how to re-pitch my question.
I also posted in existing threads instead of shouting from the rooftops with a new one every time I wanted to bring this up, but I'd hoped someone might understand what they saw enough to be interested in it. This could affect anyone trying for fine scan detail in either graphics or beam shows. (Beam shows to a much lesser extent, but it DOES affect them too if you're using straight lines and sharp angles.)
Zoof gets it though. Thankyou, that's exactly what I was looking for. Pictures aren't needed, anyone who actually does it will know what I mean, and will be able to understand the responses of anyone else who tries it.
I imagine all scanners show it to a limited extent, the question was how much? While I can blank the return draw so the line is formed by only one, the real purpose is to reveal what effects hysteresis has on small scale drawing, and the large reach in the other axis in this rotating line test just amplifies this in a way that makes it easy for us to gauge by eye. The rotation is important too, it shows a dynamic result, not just a static one, it shows at what points the hysteresis begins and ends, and even gives it shape so it might be possible to figure out exact causes. A lot of the time it won't be possible to hide it by blanking, it will affect the fine details of many things we want to show.
Here's the first post I made:
http://www.photonlexicon.com/forums/...0862#post20862
View the AVI file if nothing else, it will show the problem, and you'll see what's needed to explore it yourselves.
What I really want to see is a comparison of several scanner types, so we can pool information about this. Some scanners might be better by far than others for fine detail, and there might even be nice suprises. I suspect some of the cheaper ones might score high. No way to know if no-one tries. No special skills needed, beyond the ability to use whatever scanners and software you've got.