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<p>[QUOTE=&quot;geekpryde, post: 1934402, member: 36248&quot;]I thought that too, but at this extreme macro shots, there is just enough vibration from the camera itself, and the floor the tripod is on, that faster shutter speeds are better in my testing.&nbsp; &nbsp; I really don&#039;t like to use anything less than 1/125, and more like 1/160 is better.&nbsp; &nbsp; I mean, the camera is on the tripod rock solid, but when I am looking through the viewfinder at a coin 10 inches away, at a focal length equivalent of 157mm, I can see the coin bounce around a tiny bit from the slightest step (my dog / kids / wife), or if I breathe on it.&nbsp; &nbsp; The test shots I&#039;ve done with the sigma 50mm were better with faster than 1/125 than say 1/60.&nbsp;&nbsp; But I&#039;ll admit I did not actually test slow shutter speeds with the 105mm, but I assume unless I really have the tripod weighted with sand bags, I think the vibrations are enough with any lens to mess with perfect focus.&nbsp; (I do see people weigh down tripods with sandbags, or other weights, but I have not tried this yet).</p><p><br /></p><p>[ATTACH=full]334276[/ATTACH][/QUOTE]</p><p><br /></p>

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