
12. Extenders (Sold separately)
With Extender EF1.4X ll or EF2X ll attached, the lens specifications will change as follows:
EF135mm f/2L USM
| Focal length | Aperture |
| Angle of view |
| Maximum magnification (⋅) | ||
| (mm) | Diagonal |
| Vertical |
| Horizontal | ||
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EF1.4X II | 189 | 13° 35' |
| 7° 25' |
| 11° 5' | 0.27 | |
EF2X II | 270 | 9° 15' |
| 5° 10' |
| 7° 40' | 0.38 |
EF200mm f/2.8L II USM
| Focal length | Aperture |
| Angle of view |
| Maximum magnification (⋅) | ||
| (mm) | Diagonal |
| Vertical |
| Horizontal | ||
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EF1.4X II | 280 | 9° 20' |
| 5° 10' |
| 7° 40' | 0.22 | |
EF2X II | 400 | 8° 50' |
| 4° 55' |
| 7° 20' | 0.32 |
EF300mm f/4L USM
| Focal length | Aperture |
| Angle of view |
| Maximum magnification (⋅) | ||
| (mm) | Diagonal |
| Vertical |
| Horizontal | ||
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EF1.4X II | 420 | 6° 10' |
| 3° 20' |
| 5° | 0.18 | |
EF2X II | 600 | 4° 10' |
| 2° 20' |
| 3° 30' | 0.26 |
EF400mm f/5.6L USM
| Focal length | Aperture |
| Angle of view |
| Maximum magnification (⋅) | ||
| (mm) | Diagonal |
| Vertical |
| Horizontal | ||
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EF1.4X II | 560 | 4° 25' |
| 2° 25' |
| 3° 40' | 0.18 | |
EF2X II | 800 | 3° 5' |
| 1° 40' |
| 2° 35' | 0.25 |