Gday Alistair
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If you have more samples, your curve would be finer,
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Yep, but if you cant actually use the resolution, its wasted, hence why i mentioned faster is better for "testing", but may be overkill for creating a model. ( It cant hurt to go faster, but if your camera cant do it, there is no need to go faster than required )
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I Don't suppose you now the Nyquist Freg. for a G11 w/G2 to is?
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Nope
The G11 has a 360 tooth worm, hence one rev of the worm will take ( close as dammit ) 240 clock seconds.
What you need to know is how many segments, one turn of the worm is broken into for the PEC model ( the Bincount ), and i have never seen that mentioned for the G2 firmware. ( I havent looked real hard tho
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If you can find that data ( or someone here knows it ), then your minimum framerate would be ( 240 / 2 ) / BinCount seconds per frame ( or faster ).
As a practical limit, 2 seconds would probably work without problems,
as PE isnt always periodic, so its a rough fit at the best of times.
To see this effect, use PEMPro to collect say 10 revs of the worm in one hit. Then in the PEMPro display window, look at how well each pass correlates with the others. You should see its not as "periodic" as you think.
Andrew