Developed in response to consumer demand for a high-quality yet affordable optically image stabilized lens, the Canon EF-S 18-55mm f/3.5-5.6 IS standard zoom lens adds a phenomenally flexible lens to the EOS 40D SLR shooter’s imaging arsenal. While it features the wide-angle to mid-range zoom flexibility of its non-IS predecessor, this new EF-S 18-55mm f/3.5-5.6 IS lens offers the significant advantage of a true lens-shift image stabilization system that yields up to a full four stops of image-shake correction.

The higher performance provided by Canon’s lens shift IS system (compared with the in-camera sensor shift type offered in some competitive SLRs) includes the ability to optimize the lens performance for specific shooting situations such as low-light, long-zoom or movement while shooting (or virtually any combination of the three). What’s more, the shooter can see the image stabilization effect in the viewfinder. As the image already appears steady, more accurate framing and composition is possible, the AF point can be placed more precisely, and the photographer can concentrate on the optimal shot more comfortably.

Compact and lightweight, the optional EF-S 18-55mm f/3.5-5.6 IS zoom lens is manufactured by Canon specifically for the EOS 40D SLR and any other EOS SLR that takes EF-S lenses including the EOS 30D, EOS 20D, EOS 20Da, EOS Digital Rebel XTi, EOS Digital Rebel XT and the original EOS Digital Rebel camera. An ideal complement to the EOS 40D SLR, the EF-S 18-55mm f/3.5-5.6 IS lens is scheduled to be in stores in October at an estimated selling price of $199.99.ⁱ

EF-S 55-250mm f/4-5.6 IS

Compact and lightweight, the EF-S 55-250mm f/4-5.6 IS offers the longest zoom range in the EF-S series to date. The 88-400mm equivalent focal length opens up new framing possibilities for owners of EF-S mount cameras shooting wildlife, sports and travel photography. Optical quality is assured through a UD element, which minimises chromatic aberrations that could otherwise cause reduced contrast and colour fringing.

4-stop Image Stabilizer

Canon’s latest optical Image Stabilizer (IS) technology provides up to 4-stop compensation for image blur caused by camera shake and slow shutter speeds. Photographers normally shooting handheld at 1/250 sec can switch on IS to obtain a similarly steady and blur-free result with a shutter speed of just 1/15 second. The inclusion of automatic panning detection makes it easier for photographers to track wildlife and other moving subjects. To ensure consistently accurate results at all zoom positions, the IS system within each lens has been optimised for that lens’ specific focal length range. Since the IS system is based within the lens, the results are visible through the viewfinder when framing the image.

Appealing background blur

Both lenses also incorporate a circular aperture. This helps create an even background blur when depth of field is minimised, giving photographers more creative options for portraiture and similar types of photography.

Super Spectra coatings

Both models employ Canon’s patented Super Spectra coatings to suppress flare and ghosting – more prone to occur with digital cameras due to reflection off the image sensor. By increasing light absorption, coatings reduce reflections off lens element surfaces to deliver crisp, undistorted images with natural colour balance.

E-TTL II flash integration

The lenses transmit distance information to the E-TTL II flash system of all current model digital EOS cameras, improving flash exposure metering when used in conjunction with Canon’s range of EX Speedlite flash units.

[tags]Canon, EF-S, 18-55, 55-250, mm, is, lens, f/3.5-5.6, price, review[/tags]