Butterfly Wing. Darrell Gulin saw the beauty in the intricate patterns and color of the scales comprising the wing of a spicebush swallowtail butterfly. It was easy to capture with a long exposure at 1.4x with the Canon RF100mm 2.8L Macro IS USM. Exposure: 2 sec., ƒ/32, ISO 1250. In photography, the term macro is defined as a “life-size, 1x, 1:1 or larger” rendering of a subject on film or sensor. Any magnification less than 1:1 is considered “close-up” photography. A 100mm macro lens that captures images at 1x without accessories has been available to Canon users since 1979, beginning with the Macro FD 100mm f/4. A faster ƒ/2.8 upgrade designed for the EF mount came in 1990, a version with...