Canon announced the new EF 28-300mm f/3.5-5.6 L IS USM lens. This new lens provides almost 11x zoom from a wide angle 28 mm and also adds Image Stabilisation (IS).

The lens incorporates Canon's renowned Image Stabilisation (IS) Mode 2 technology: during major movement in a single direction, IS automatically determines that the movement is conscious panning and halts correction in the relevant direction, thereby preventing shake-return. The system automatically detects a lack of movement/vibration in order to preventing errors during tripod use.

The inner focusing ring-type ultrasonic motor (USM) delivers high-speed, high-precision, super efficient and virtually noiseless autofocusing, with good holding torque for rapid response, accurate stopping. Full-time manual override without damage to the autofocus mechanism is featured.

Canon announced the new EF 70-300mm f/4.5-5.6 DO IS USM zoom lens, the first zoom lens ever to use Diffractive Optical (DO) elements. These new elements, seen previously only in the 400 mm f/4.0 DO lens enable this 4.2x telephoto zoom lens to measure less than 10cm long at the 70mm position.

The zoom features a zoom ring locking mechanism, locking the lens at its shortest total length. This helps to protect the lens from potential damage by preventing the zoom elements extending under their own weight.

The lens incorporates Canon's renowned Image Stabilisation (IS) technology, compensating for approximately three stops without any perceptible increase in image blur when shooting static subjects or panning. The IS mode-2 system automatically detects lack of movement / vibration to prevent operation errors when a tripod is in use.

The first lens featuring the DO technology will be the 400mm/4.0 DO IS USM, waited for the first half of 2001. The lens will be equipped by the new diffractive optic element, that allows the correction of the aberrations either chromatic and spherical, and the decreasing in the dimension of the lens. Also conserving the optical quality of the precursor, the new 400/4 DO will be smaller (26% shorter) and lighter (36% lighter).

MTF tests executed on new Canon EF-L 70-200/4.0 zoom show a lens of extraordinary quality, only a bit under the highest limit of "excellence", with a constant behavior to all the focals and to all the diaphragms. The optical scheme is 16 elements/13 groups; two lenses in ultra-low dispersion glass (UD = Ultra low Dispersion) and one in fluorite. The autofocus selector has a limiter of the fire field, which increases the speed of the focusing optical group. The internal focusing and the fixed frontal lens complete the main features. The diaphragm is composed by 8 elements. The mechanical construction is accurate, beginning from the external white paint with a function of heat dispersion. The weight of the lens is 700 grams, so the lens results extremely light and manageable. The lens is of professional class, but the price is a lot interesting.

F-Stop Range 4-32 Magnification 1:4.8 Angle Of View 34°-12° Groups/Elements 13/16 Filter Size 67mm Weight 702 g 25 Oz. Special glasses 2 ULD 1 FL

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