Canon’s triple-layered diffractive optical element (DO) significantly reduces the length and weight of the lens. Distortion and vignetting slightly better than non-DO version. IS adds appeal.
One of only two lenses that contains both refractive and diffractive glass elements, this image-stabilized tele zoom is dramatically more compact -- and expensive ($1,143, street) -- than its refractive-only Canon ($549, street) or Nikon ($479, street) counterparts. Unlike more common refractive optics, diffractive optical design is based on how light rays bend when forced to move around (not through) an obstruction -- in this case, a pattern of molded, sawtooth, Fresnel-like, concentric circles. A full-frame lens, it scales up to a 105-450mm on Canon EOS Digital Rebel models.
Read more| Lens Type: | Zoom |
| Compatibility: | Full Frame |
| Range: | Normal Super Telephoto |
| Mount: | Canon |
| Auto Focus: | Yes |
| Full-Time Manual Focus Override: | No |
| Silent AF: | Yes |
| Zoom: | Yes |
| Minimum Focal Length: | 70 mm |
| Maximum Focal Length: | 300 mm |
| Fastest Aperture: | f/4.5 |
| Slowest Aperture: | f/22.0 |
| Image Stabilization: | Yes |
| Elements: | 18 |
| Groups: | 12 |
| Filter Size: | 58mm |
| Length: | 3.9 inches |
| Weight: | 25.4 ounces |
| Price: | $1250.00 |
| Tripod Collar: | No |
| Included Case: | Yes |
| Macro: | No |
| Tilt/Shift: | No |
| Model Number: | |
| SKU: |
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