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Review Summary
2009-08-03T21:00:00
I tried this lens out for an event. I had a hard time getting it to focus consistently or at all. The USM mechanism was somewhat quiet, but there was an audible 'THUNK' when ever it would stop. Save up a bit longer for the IS version.
Drew
13 elements in 13 groups
Focus Adjustment: Front group rotating extension system with USM
Zoom System: Rotating type
Autofocus Motor: Mictro USM: Gear drive to optics
Aperature design : 6 blades
43° to 12°
4.5/5.6 to f/22-29
1.2m / 3.9 ft.
Magnification at minimum focus: 0.21x (at tele-zoom setting)
52mm
Max. Diameter x Length : 2.8" x 3.8" / 70.4 x 97.3mm
10.9 oz. / 310g
Manual focus by turning front section of lens (no distance scale on lens)
Magnification with Extension Tube EF 12II: 0.26x - 0.06x
Magnification with Extension Tube EF 25II: 0.50x - 0.14x
Super-compact and light, this lens is compatible with all EOS cameras and ideal for digital SLRs when used on the EOS Digital Rebel, it's equivalent to an approx. 90-320mm lens. The 13-element design's new optical coatings are optimized for digital cameras. It focuses down to under 4 feet (1.2m), and its Micro USM-powered AF is faster than ever, due to new electronics within the lens.