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The dent or 'tangential intruding chord' or TIC is clearly visible, but does this disappear with careful eye positioning?
Lee
Yes, it does - at the price of creating „dents“ in other places.
I have seen another sample where you could get a perfectly round EP by carefully positioning the binocular. Not in my sample, though.
But you point out an important observation: the Noctivid is prone to substantial vignetting, more than most alphas I know. Both samples I have reviewed showed this clearly.
Is this also the experience of other users ?