Canon EF-S 10-22 mm f/3.5-4.5 USM
Canon EF-S 10-22mm
f/3.5-4.5 USM
Canon's EF-S10-22mm f/3.5-4.5 USM was developed for users who want to achieve full-fledged ultra wide-angle shooting with a digital SLR camera.
The optical design of Canon's new ultra wide-angle lens contributes to both a focal range equivalent to 16-35 mm in the 35 mm format as well as a compact, lightweight design.
Moreover, a combination of advanced optical technologies, including Super UD (ultra-low dispersion) and aspherical lenses, work to effectively correct a variety of aberrations for outstanding image quality throughout the zoom range. The unit also realizes a minimum focusing distance of just 0.24 m throughout the entire zoom range.
The EF-S10-22mm f/3.5-4.5 USM zoom lens features an environmentally conscious design that anticipates the EU's RoHS Directive.
Descriptios
The objective is specially designed for digital mirror chambers c by the size of sensor control APS-C and fastening EF-S (Canon EOS 20D, EOS-20Da, EOS 300D, EOS-350D and new models of digital chambers with fastening EF-S). A range focal length – 16–35 mm in 35-mm film – it is picked specially up by company Canon for a growing circle of the serious photographers preferring digital mirror chambers. At it lens – ring ultrasonic motor Canon (USM) for fast silent autofocusing and variety of functions thanks to which they on quality of the image come nearer to the well-known professional objectives Canon of a L-series.
A wide-angle objective Model EF-S 10-22 mm f/3,5-4,5 USM – the easiest and compact zoom-objective with a focal length 16-35 mm (in 35-mm an equivalent): The ideal decision for landscape shooting and shooting indoors, and also for experiments with the fixed focus and strong prospect. It differs also in small distance of macroshooting: in total 24 see In objective EF-S 10-22 mm f/3,5-4,5 USM, close on quality to objective EF-S 17-85 mm f/4–5,6 IS USM, 13 elements in 10 groups, including a lens from glasses Super UD and two element.
This objective with unrotative lobbies element – the ideal decision for shooting of landscapes with polarising and step filters. Fastening EF-S At объектива – fastening Canon EF-S corresponding to digital mirror chambers EOS 20D, EOS 20Da, EOS 20Da, EOS 300D, EOS 350D and to new models of digital chambers with fastening EF-S.
The size of gauge APS-C of these chambers demands multiplication of a focal length on 1,6. Being advantage to telephoto lenses, it, however, limits possibilities of wide-angle shooting. Satisfying inquiries of the photographers, removing with new digital chambers, company Canon has developed special fastening for objective EF-S. Chambers with fastening EF-S are completely compatible to all existing objectives EF, and objectives EF-S approach only to chambers with fastening EF-S.
Optimised for digital mirror chambers with gauges of format APS–C, fastenings EF-S represent the economic wide-angle decision for skilled photographers. The letter «S» in marks EF-S means «a short back working piece»: the back lens of objective EF-S settles down more close the usual image to the gauge in chambers with the gauge of format APS-C. The white label on fastening of objectives allows to distinguish them from usual objectives EF with a red label. The back rubber ring protects from damages at casual attempt to establish an objective on the incompatible chamber.
High-speed autofocusing Use of ultrasonic fluctuations in ring motors of an objective provides record speeds of focusing. Precision motors focus an objective quickly and precisely: it is possible to remove without delays and misses. And even more to raise accuracy and speed, drives of both objectives are specially adjusted under chambers with fastening EF-S.
Possibility at any moment Thus remains to execute manual focusing without risk of damage of the motor. Attractive degradation of a background the almost ideally round electromagnetic diaphragm of both objectives helps to create attractive degradation of a background when the photographer, underlining object of shooting, minimises depth of sharpness.
A find for a digital photo Having improved an objective covering, engineers Canon have effectively suppressed patches of light and auras which can arise in digital chambers as a result of reflexion from a surface of the gauge of the image. Now a covering, reducing reflexion from a back surface of a lens, promotes reception of the crystal-clear, not deformed digital image with natural colour balance.
The flash interfaced to distance the Objective can hand over the information on distance, providing compatibility with new system of gauging at shooting with flash E-TTL II. At work with flashes Canon Speedlite EX it allows to improve considerably экспозамер. To an objective it is possible to get in addition бленду. In harmony with environment According to strict ecological policy Canon, in our optics it is used has exclusively flown down, not containing lead.