Not cheap but I have been waiting for a sub £900 price for donkey years. Cheaper than ebay second hand. This lens won't drop much in value - even second hand.
To meet the growing demand of digital SLR owners, this ultra-wide-angle zoom offers a broader view, fast aperture, and closer focusing down to 11 in. (.28m). The first EF wide-angle zoom to combine three Aspherical elements and Canon’s UD glass, the lens remains compact while providing superior image quality across its range. Constructed to pro standards, it’s also highly resistant to dust and moisture.
A new EF 16-35mm f/2.8L II USM Lens succeeds the versatile EF16-35mm f/2.8L USM Lens as a high-performance L-series wide-angle zoom lens, specifically designed for improved peripheral image quality. Compatible with all EOS SLRs past and present, it uses three high-precision aspherical lens elements and two Ultra Low Dispersion (UD) lens elements to minimize lateral chromatic aberration and to produce superb image quality with excellent resolution and contrast. New coatings minimise ghosting and flare. It is an internal focus design, so the front element does not rotate during focusing and zooming, a convenience for users of circular polariser filters. The lens is also fully gasketed and sealed for dust and moisture resistance, and it features an electronic diaphragm with circular blades for natural-looking background blur effects.