|EF-S||Autofocus lens designed only for Canon APS-C digital SLR cameras.|
|USM||The lens is equipped with ultrasonic motor to provide very fast and virtually silent autofocus. Learn more|
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|Diagonal angle of view:||107.3°-63.4° (Canon APS-C)
|Lens construction:||13 elements in 10 groups, including 3 ASPH, 1 UD|
|Closest focusing distance:||24 cm|
|Number of diaphragm blades:||6|
|Type of autofocus motor:||Ultrasonic (Canon EF-S)
|Full-Time Manual Focus:||Yes|
|Maximum diameter x Length:||Ø84 x 90 mm|
|Materials:||Plastic barrel, metallic mount|
|Filter size:||77 mm|
The lens barrel is of moderate weight, made of plastic. The lens mount is metallic.
The lens has rather narrow focal range. Formally it is the disadvantage, however in practice it contributes to a good compensation of optical aberrations and equally high image quality at the entire focal range.
The lens features AF/MF focus mode switch.
|AF||Autofocus mode with Full-Time Manual Focus.|
|MF||Manual focus mode.|
The lens uses front filters with standard size of 77 mm which are easy to find. However, filters of such size are more expensive and mainly used with professional lenses.
The filter thread does not rotate during focusing which allows convenient use of different types of filters (including but not limited to polarizing and gradient).
Aspherical elements (ASPH, XA) minimize spherical aberration, astigmatism, coma and ensure excellent sharpness and contrast even at maximum aperture.
Low dispersion elements (AD, ED, LD, HLD, SD, UD etc) and fluorite elements minimize chromatic aberrations and ensure excellent sharpness and contrast even at maximum aperture.
Both zooming and focusing are internal.
|Camera||Canon EOS 50D||Canon EOS 20D|
|Sensor size||22.3×14.9 mm||22.5×15 mm|
|Distortion at 10 mm||-1.21 %||-2.4 %|
|Distortion at 22 mm||+0.45 %||+0.2 %|
|Vignetting at 10 mm F/3.5||-1.42 EV||-1.8 EV|
|Vignetting at 22 mm F/4.5||-1.37 EV||-1.5 EV|
|User Manual. English, Adobe PDF, 287 KB|
|User Manual. Русский, Adobe PDF, 273 KB|
|Prime lenses for Canon EOS DSLR cameras|
Alternatives (AF, 8-25 mm)
|Canon EF 11-24mm F/4L USM||2015||⊗|
|Sigma 10-20mm F/3.5 EX DC HSM||2009||⊗|
|Sigma 10-20mm F/4-5.6 EX DC HSM||2005||⊗|
|Tamron SP AF 10-24mm F/3.5-4.5 Di II LD Aspherical (IF) B001||2008||⊗|