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<p>[QUOTE=&quot;rmpsrpms, post: 1533983, member: 31773&quot;]On the full frame photos I agree with you. Please tell me you see a big difference in the 1:1 pixel photos. </p><p><br /></p><p>And this comes back to the OP: Once you down-size the original, small differences like I&#039;m picky about essentially go away. This is why your 100mm Canon will give essentially the same quality result as your 150mm Tamron...both can produce essentially the same quality once the image is down-sized by 4x or so. At that point what matters is the basics:</p><p><br /></p><p>1) Composition. Make sure your coin is straight (horizontal lines/printing is horizontal) in the frame</p><p>2) Focus. Don&#039;t trust autofocus. Many folks swear by AF, but if your DOF is set correctly, focus is ultra-critical and needs to be done manually. </p><p>3) Exposure. Set your ISO at 100 or lower, your aperture to 5.6 for Dimes to Quarters or 8.0 for Halves to Dollars, and your camera to aperture priority. Turn your exposure down (EV) until the brightest areas are not blown-out. You can always brighten dark areas, but you can never recover over-exposure[/QUOTE]</p><p><br /></p>

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