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<p>[QUOTE=&quot;semibovinian, post: 2661554, member: 76467&quot;]With Tv mode, the camera might try to set the aperture, but with an old manual lens or microscope objective attached, it can&#039;t.&nbsp; Tv mode ends up being the same as manual mode, but with much better exposure through live view.&nbsp;&nbsp; For full-coin shots (when I&#039;m not stacking) I usually set the aperture to f/8 (with the aperture ring on the lens) to get reasonable DOF and acceptable sharpness.&nbsp; I then set the ISO to 100, and use the on-screen menu to pick a suitable shutter speed.&nbsp;&nbsp; Of course, f/8 doesn&#039;t work well with smaller coins, as the magnification approaches and exceeds 1x, so stacking is required for those. </p><p><br /></p><p>Tv won&#039;t work like this with EOS Canon lenses, but I think regular Manual mode works OK with live view when using EOS lenses.[/QUOTE]</p><p><br /></p>

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