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<blockquote data-quote="STM" data-source="post: 319732" data-attributes="member: 12827">In most cases a macro/micro lens will perform better than say a &quot;normal&quot; lens and extension tubes for a few reasons:1. Flatness of field. Macro/micro lenses are designed to provide better flatness of field than a normal, every day lens.2. Close focus capability. Macro/micro lenses can be used for general photography as well but are usually optimized for close focus. The 55mm f/2.8 AIS Micro has &quot;CRC&quot; which stands for close range compensation. Internal elements shift a little to improve close focus quality3. Adding extension tubes reduces the amount of light landing on the film/sensor by something called the inverse squared law. Using a combination of extension tubes to achieve a 1:2 will reduce light more than a Macro/Micro lens will for the same magnification.Of all of the alternatives though, extension tubes are probably the best compromise if you don't have a macro/micro lens. Especially when compared to using a teleconverter&nbsp; or close up lenses.</blockquote>

[QUOTE="STM, post: 319732, member: 12827"] In most cases a macro/micro lens will perform better than say a "normal" lens and extension tubes for a few reasons: 1. Flatness of field. Macro/micro lenses are designed to provide better flatness of field than a normal, every day lens. 2. Close focus capability. Macro/micro lenses can be used for general photography as well but are usually optimized for close focus. The 55mm f/2.8 AIS Micro has "CRC" which stands for close range compensation. Internal elements shift a little to improve close focus quality 3. Adding extension tubes reduces the amount of light landing on the film/sensor by something called the inverse squared law. Using a combination of extension tubes to achieve a 1:2 will reduce light more than a Macro/Micro lens will for the same magnification. Of all of the alternatives though, extension tubes are probably the best compromise if you don't have a macro/micro lens. Especially when compared to using a teleconverter or close up lenses. [/QUOTE]

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