![]() The Canon EF 100mm f/2.8L Macro IS USM lens is dust- and moisture-resistant but I was unable to discover an operating temperature range, which used to be a de rigueur specification for every company’s lenses. Tip: While the ring light theoretically provides TTL exposures, I’ve found that when working in butterfly-friendly environments shooting using manual exposures produces better results. The Canon EF 100mm f/2.8L Macro IS USM lens is compatible with the optional Tripod Mount Ring D Collar ($172) and MR-14EX II Macro Ring Lite ($549) that I’ve found indispensable for photographing butterflies. The ruggedly made ET-73 lens hood that’s included offers additional protection. The Canon 100mm f/2.8L Macro IS lens uses 67mm filters and when shooting in environmentally challenging areas, you might want to add Canon’s Protector Filter ($49). That feature also makes it possible to use a polarizing filter without any orientation problems. The Canon 100mm f/2.8L Macro IS lens design uses internal focusing so the barrel doesn’t extend while focusing, so you won’t scare any katydids ( Tettigoniidae) during close-up shooting. It was photographed at Denver’s Butterfly Pavilion with a Canon EOS 50D and an MR-14EX II Macro Ring Lite at an exposure of 1/60 second at f/9 and ISO 400. I’m not an entomologist, but I think this butterfly is from the Heliconius genus sometimes called a Passion Vine butterfly. A range-limiting switch is another one of the controls on the lens barrel and has settings for controlling the AF range from one to 1.6 feet, 1.6 feet to infinity, and one foot to infinity. To activate image stabilization the lens has a single position On/Off switch located just below the inevitable AF/MF selector.įor fast autofocus, the Canon 100mm f/2.8L Macro IS lens uses an ultrasonic focus motor (USM) and has manual focus override for quick focus touch-ups. ![]() Usually this means having to use a tripod but the Canon EF 100mm f/2.8L’s image stabilization is so good that all the images I made with it were hand-held and sharp. This is useful in a macro lens because at close-focusing limits even tiny movements are greatly amplified. The EF 100mm f/2.8L Macro IS USM lens has what Canon calls “Hybrid Optical Image Stabilization,” which uses a vibration gyro and acceleration sensor to compensate for up to four stops of both angular and shift movement. To minimize focusing time, the lens has a range-limiting switch with three settings to control the range in which the autofocus tries to focus: one to 1.6 feet, 1.6 feet to infinity, and one foot to infinity. ![]() Optional extension tubes, such as Canon’s EF 25 II ($139) and EF 12 II ($82), can increase this ratio for greater magnification and when combined with the lens’s normal 12-inch minimum focus distance, make it ideal for photographing your favorite insects. On the other hand, Canon’s EF 100mm f/2.8L Macro IS USM lens ($899) allows for continuous focusing down to true 1:1 life-size magnification. If you do the math, this only requires a magnification ratio of approximately 1:4. With a 1:1 ratio, a DSLR with a full-frame chip should be able to produce life-size magnification and focus on an area as small as 24x36mm.īut manufacturers sometimes describe a lens’s close-focusing capabilities as “macro” even if it doesn’t meet that definition, and over time the term has come to mean focusing on a subject close enough so the image is life-size or larger when viewing a 4圆-inch print. The classic definition of macro photography is that the image projected onto the digital sensor (or film plane) should be the same size as the subject. “The trick to forgetting the big picture is to look at everything close-up.” - Chuck Palahniuk The Canon EF 100mm f/2.8L Macro IS USM lens, sitting on my desk, is only 4.84-inches long, or tall if you prefer, but the ET-73 lens hood measures 3.25 inches which makes the lens look bigger and bulkier than it really is.
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