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Forum: Pentax SLR Lens Discussion
04-22-2011, 08:45 AM
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Aside from being easier to work with since the lens itself will focus whereas with a tube your movement is needed to focus. A true macro lens will generally produce sharper and brighter pictures as it is specifically setup for macro photography. However, this should not be confused with Sigma/Tamron and other manufacturers definition of macro in the case of the 70-300 where they slapped on macro but only does 1:2 or 1:3.
Other than that I have no more help. Perhaps someone more technically inclined can help out here.
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