Canon announces new IS lens duo

Canon have this week announced two new IS lenses - the EF24-70mm f/4L IS USM and EF35mm f/2 IS USM. Both lenses use Canon's Image Stabilizer (IS) technology and Ultrasonic Motors for fast AF.
Details of both from Canon are below -

EF24-70mm f/4L IS USM – high performance, high flexibility, Hybrid IS
The EF24-70mm f/4L IS USM is the latest model in Canon’s elite L-series of pro lenses, and expands the range of standard zoom EF lenses available for photographers. Ideal for reportage and wedding photography, the zoom lens combines an essential ‘every day’ focal range with a premium quality L-series construction to deliver consistently sharp, professional-quality stills in a range of different situations. The new macro function optimises the placement of lens groups for macro photography, allowing shooting at a maximum magnification of 0.7x – thus reducing the need to carry a dedicated macro lens.

Its first-class optical system includes two aspherical elements alongside two Ultra-low Dispersion (UD) lenses, each with optimised Super Spectra Coatings to minimise chromatic aberration, colour blurring and flare. A constant f/4 aperture throughout the zoom range provides photographers with exceptional creative control, allowing blurring of the background of a scene at all focal lengths. A nine-blade circular iris also assists photographers in making their subjects stand out, delivering beautiful out-of-focus highlights (bokeh) in the background blur to add atmosphere to a shot.

The EF24-70mm f/4L IS USM also features a newly designed IS system, to deliver blur-free images throughout the zoom range. Canon’s advanced optical IS offers a 4-stop light advantage, while Hybrid IS effectively compensates for angular and shift shake during macro shooting for stable close-ups.

Super-fast AF performance is provided by a small, ring-type Ultrasonic Motor (USM). Working in combination with a high-performance CPU and advanced AF algorithms, USM technology enables accurate, silent and ultra-responsive autofocusing. Full-time manual focusing also that ensures adjustments can be made even when AF is engaged.

The EF24-70mm f/4L IS USM zoom has a revised shape to ensure ease-of-use with the focusing and zoom rings designed for easy and optimal operation. The lens has a dust- and drip-proof construction and a lock function stops the lens slipping out when being carried, thus preventing any possible lens barrel damage. Fluorine coating minimises the amount of dust, dirt and fingerprints that adhere to the front and rear lenses – helping to maintain superior image quality and reduce the need for cleaning.

EF35mm f/2 IS USM – a wider look at the world
The new EF35mm f/2 IS USM lens is designed to offer outstanding flexibility – allowing photographers to capture an even broader range of scenes and subjects. It is Canon’s first-ever 35mm prime lens to feature optical Image Stabilizer technology, which combines with high quality optics to offer outstanding performance. The 35mm focal length also provides the ability to capture everything from close-up portraits to landscapes, making it an ideal companion for travel or general reportage photography.

A bright, fixed f/2 aperture also allows photographers to employ a shallow depth-of-field, and optical IS offers users a 4-stop light advantage, allowing the photographer to minimise camera shake when shooting hand-held in low light conditions. Intelligent detection of panning motion is also supported, with the panning IS mode automatically engaged to enable photographers to capture movement with greater accuracy.