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if you have high frequency jitter due to seeing, it sometimes helps to drop the magnification a bit and decrease the exposure times to freeze the seeing - eg you may drop back from 4x to 3x and decrease the exposure time from 1/60 to 1/90 sec per frame.
from my experience all televue stuff is top quality. I have the TV3x, a TV2x and a 5x Powermate - they are all so good that they provide magnification and nothing else and they work down to f4
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