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<p>[QUOTE=&quot;semibovinian, post: 2662039, member: 76467&quot;]With an EOS lens attached in M mode, the final exposure looks pretty much like what you see during the liveview.&nbsp; With a non-EOS lens, this is often not the case.</p><p><br /></p><p>One difference I noticed is that during liveview, the lens aperture is not the same as during the exposure.&nbsp; When you press the on-screen shutter button, the lens aperture changes (I assume to the requested aperture), right before the shutter opens.&nbsp; Maybe this is what allows M mode to work right with an EOS lens but not with a non-EOS lens?&nbsp; I was testing this using a mirror to watch the aperture blades of an old (non-L) Canon EOS 100mm f/2.8 macro lens.</p><p><br /></p><p>This EOS lens works fine for coins that are larger than 15mm, meaning the magnification is less than 1X on the APS sensor.&nbsp; All my DSLR coin shots prior to 2009 (maybe 2011?) were done using this lens. One advantage of using a bellows and enlarger/duplicating lens (like the 75mm f/4 APO Rodagon D 1x I now use) is that you can go above or below 1X very easily, and the results are just as good -- maybe better.[/QUOTE]</p><p><br /></p>

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