introduced 2004 The new EF 28-300mm lens is a replacement for the EF 35-350mm lens. With a zoom range of almost 11x, it covers everything from wide-angle to telephoto. Zoom lock
The EF 28-300mm lens has a zoom adjust mechanism which allows the sensitivity of the zoom movement to be adjusted to suit personal preferences. The zoom action can be locked at any focal length. Image stabilisation
The lens incorporates Canon’s Image Stabilisation (IS) technology. This compensates for approximately three steps in speed without any perceptible increase in image blur when shooting static subjects or panning with a hand-held camera. For example, shooting at 1/125 second without the IS switched on gives similar results, in terms of blur from camera shake, as shooting at about 1/15 Second with the IS activated. During major movement in a single direction, IS Mode 2 automatically determines that the movement is intentional panning and halts correction in the relevant direction. The system also detects the lack of movement or vibration which indicates the use of a sturdy tripod and turns off the IS to avoid over-correction. Fast autofocus
A rear-focusing ring type USM, high-speed CPU and new AF algorithms combine to give the lenses extremely fast auto-focusing. Full-time manual override is featured, removing the risk of damage to the autofocus mechanism during manual focus. Ideal for digital
Lens shape has been optimised and new coatings added to suppress ghosting and flaring. This makes the two lenses ideal for use with digital cameras - these are more susceptible to reflections off the recording media than film cameras. When used with the EOS 1D or EOS 1D Mark II, the EF 28-300mm lens will provide an angle-of-view similar to that of a 36-390mm lens fitted to a 35mm-format camera. When fitted to digital cameras with an APS-C size sensor, such as the EOS 10D or EOS 300D, the EF 28-300mm lens will provide an angle-of-view similar to that of a 45-480 lens fitted to a 35mm-format camera. Attractive defocusing
The EF 28-300mm lens has 22 elements in 16 groups for low distortion and high corner-to-corner resolution throughout the entire zoom range. The use of three ultra-low dispersion (UD) glass elements effectively curtails the residual chromatic aberrations that can plague lesser quality long lenses, while aspherical elements correct various kinds of aberration that occur during zooming to give the lens the unsurpassed clarity and resolving power that are the hallmark of professional L-series lenses. Working with EOS
The drive pattern of each lens is tailored to suit the latest EOS cameras, extracting maximum benefit from the wide maximum apertures. EOS magazine, March 2004, page 64 Construction (elements/groups): 23/16
Diagonal angle of view: 75° to 8° 15’
AF drive system: Ring USM
Manual focusing: Enabled with focus mode switch and focusing ring (full time
Focusing range: 0.7m to infinity
Maximum magnification: 0.06x (wide); 0.30x (tele)
Minimum aperture: f22 to f38
Aperture blades: 8 (circular type)
Filter diameter: 77mm
Diameter x length: 92 x 184mm
Weight: 1670g
Lens hood/lens cap: ET-83G/E-77U
Lens case: LZ1324
Lens Extender EF: not compatible | 
