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Optical design
| Format: 35mm SLR
Type: Zoom lens
Focusing: Auto Focus (AF)
Lens mounts: Canon EF, EF-S
First year of production: 2005
Optical design: 15 elements in 10 groups (One element of extra-low dispersion UD)
Features: Ultra-Sonic Motor, Optical stabilisation | |
Specifications:
| Focal length | Max. aperture | Min. aperture | Blades | Min. Focus (m.) | Filter Ø (mm.) | Weight (gr/oz) | Length (mm/in) |
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| 70mm - 300mm | f/4.0 - f/5.6 | f/32 | 8 | 1.5 | 58 | 630/22,2 | 143/5,6 |
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Additional information:
The Canon EF 70-300 mm f/ 4.0-5.6 L IS USM is a new (marketed in Oct., 2010) professional high-performance zoom lens, equipped with a 4-stop optical image stabilizer. It is compact (just 143 mm long), dust and water resistant.
The characteristics of the Canon EF 70-300mm f/4.0-5.6 L IS USM:
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image stabilizer offers 4 stops of improvement
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ring-type ultra-sonic motor AF drive
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full-time manual (FTM) focusing (even during autofocus operations)
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floating mechanism of focusing (Float)
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internal focusing (I/R)
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circular 8-blade aperture
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two UD elements
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Super Spectra coating, eliminating flare and spurious reflections
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new fluorite coating of extreme elements preventing from water and dirt
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diagonal angle of view 34° - 8° 15′
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horizontal angle of view 29° – 6° 50′
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vertical angle of view 19° 30’ – 4° 35′
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minimum aperture 32-45
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max. magnification ratio 0.21 (at 300 mm)
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magnification with Extension Tube EF12 II 0.29-0.04
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magnification with Extension Tube EF25 II 0.38-0.09
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maximum diameter - 89 mm
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lens hood ET-73B and case LP1424 included in standard delivery kit
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additional C (WII) tripod mount ring
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incompatibility with extenders
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recommended retail price $1,600
Links to online resources:
PDF Files:
Posted by: dv Date of publication: 20.09.2010
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