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<p>[QUOTE=&quot;SuperDave, post: 2661522, member: 1892&quot;]The trouble with Tv (Shutter Priority) is that you set shutter speed and the camera decides aperture. Aperture is<b> critical </b>to appropriate depth of field for coin photography, and the &quot;sweet spot&quot; between sufficient depth of field and the onset of diffraction is somewhere between &quot;tiny&quot; and &quot;nonexistent.&quot; That is the specific reason I still use only a 10MP sensor - smaller pixel pitches hasten the onset of diffraction-limited aperture.[/QUOTE]</p><p><br /></p>

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