The Canon EF 300mm f/2.8L IS II USM is the 6th generation of a venerable family of Canon 300mm f/2.8 lenses that began in 1974, and have become famous for their exceptional sharpness, contrast and color fidelity. Ideal for a wide range of applications ranging from professional photojournalism and sports photography to nature and wildlife, Canon's 300mm f/2.8 lenses have always led the industry with new technical advances in every generation. The EF 300mm f/2.8L IS II USM lens carries on this tradition with improved image quality, lighter weight, improved Image Stabilization and enhanced durability making it a great option for handheld work in the field. The optical formula of the new lens has been upgraded with the inclusion of two fluorite lens elements for improved image quality and reduced chromatic aberration. Helping to reduce arm fatigue, Canon has reduced the overall weight of the lens by 8 percent to 82.9 oz., making it the lightest weight lens in the Canon EF 300mm f/2.8 series. The Image Stabilizer provides an equivalent of approximately four full shutter speed steps of shake compensation and has been enhanced through the incorporation of a rolling-ball-friction system in place of sliding parts in the compensation optics barrel for a minimum-friction structure. The overall durability of the lens has also been enhanced through increased usage of magnesium alloy and titanium for lens barrel components, together with weather sealing for all exterior joints and switches and a new fluorine anti-smear coating applied to the front and rear elements.
The Canon EF 300mm f/2.8L IS USM lens is expected to be available in December for an approximate retail price of $7,000.