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Photography Q&A
Extension Tube question
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<blockquote data-quote="480sparky" data-source="post: 224259" data-attributes="member: 15805"><p>The only way to know what ratio you have is to measure it. I shoot a ruler marked in 1/32" and compare the result to the sensor size.</p><p></p><p>As for image degradation, there isn't much.... DOF becomes the real issue. Once you really start to get into high magnifications, you might get into vignetting issues, as well as magnifying the minor defects in the lens.</p></blockquote><p></p>
[QUOTE="480sparky, post: 224259, member: 15805"] The only way to know what ratio you have is to measure it. I shoot a ruler marked in 1/32" and compare the result to the sensor size. As for image degradation, there isn't much.... DOF becomes the real issue. Once you really start to get into high magnifications, you might get into vignetting issues, as well as magnifying the minor defects in the lens. [/QUOTE]
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