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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. Troubador

    GPO Passion ED 8x42

    The objective part would be you and Steve both reporting the presence of e.g chromatic aberration or astigmatism. The subjective bit would be how serious or trivial you both judged it. One of you might call it 'noticeable', the other might say it was 'moderate', but if it was really bad you...
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