Review: the New Canon EF 200-400mm f/4L IS USM Extender 1.4x Lens
"Canon has just announced a new telephoto-zoom lens that covers a range of oft-used longer focal lengths and brings with it the quality and usability of their L series lenses: the EF 200-400mm f/4L IS USM Extender 1.4x lens. This lens takes the new top spot as the longest zoom lens for EOS cameras and incorporates a constant f/4.0 maximum aperture to provide consistent imaging performance throughout the range of focal lengths. Additionally, a 1.4x teleconverter is integrated into the lens’s design to provide an effective maximum focal length of 560mm. The efficiency of the zoom lens profile coupled with an internal teleconverter is further benefitted by the enhanced optical construction—including a fluorite glass element—as part of the L series of professional-grade lenses."
| Canon EF 200-400mm f/4L IS USM Extender 1.4x Lens | ||
| When internal extender is set at 1x | When internal extender is set at 1.4x | |
| Focal Length | 200-400mm | 280-560mm |
| Maximum Aperture | f/4.0 | f/5.6 |
| Minimum Aperture | f/32 | f/45 |
| Lens Construction | 25 elements in 20 groups | 33 elements in 24 groups |
| Angle of View (Diagonal) | 12° - 6°10' | 8°50' - 4°25' |
| Minimum Focusing Distance | 6.6' / 2m | 6.6' / 2m |
| Maximum Magnification | 0.15x (at 400mm) | 0.21x (at 560mm) |
| Field of View | 6.2 x 9.25" / 157 x 235mm (at 6.6' / 2 m) | 4.4 x 6.5" / 111 x 166mm (at 6.6' / 2 m) |
| Filter Size | 52 (WII)-series drop-in filter | 52 (WII)-series drop-in filter |
| Dimensions | 5 x 14.4" / 12.8 x 36.6 cm | 5 x 14.4" / 12.8 x 36.6 cm |
| Weight | 8 lb / 3.6 kg | 8 lb / 3.6 kg |
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