In our user tests it was a good match of the EOS 400D but felt slightly less comfortable on the heavier 40D body.
CANON OBJEKTIV 55 250 MM FULL
The two lenses have similar optical constructions and identical close focusing points, although the 55-250mm lens is marginally slimmer and 80 grams heavier and its barrel extends about 8 mm further at full zoom extension. In both size and weight, the 55-250mm lens is similar to the EF 55-200mm f/4.5-5.6 II lens (which can also be used with 36 x 24mm imagers). A lens hood (ET-60) and lens case (LP1019) are available as optional accessories. The lens is supplied with end caps but no lens hood. Neither a distance scale nor indicators for depth of field or infrared adjustment are provided. The closest focusing distance is 1.1 metres. At 250mm, the maximum magnification is 0.31x, which does not come into the true 1:1 macro range. A white dot provides a position indicator for fitting the lens on a camera.Īperture settings range from f/4.0 to f/22 at the 55mm setting and f/5.6 to f/32 at 250mm. Behind this ring, the lens carries slider switches for AF/MF and Stabiliser on/off settings.
The zoom ring, which is 4cm long, lies nearest to the camera.īehind the rubberised section on the zoom ring is a narrow aluminium band with engraved settings marking the 55mm, 70mm, 100mm, 135mm, 200mm and 250mm positions. The ridges on the focusing ring are narrower than those on the zoom ring and may trap grit. However, some care will be required when changing lenses as the lens mount is also made of plastic and, though appearing quite solid, may be vulnerable to chipping and (eventually) wear.īoth focusing and zoom rings have textured rubber coatings to provide a secure grip. Canon claims only environmentally-friendly, lead-free glass is used in the construction of the lens – but makes no mention of possible plastic components (which can keep costs and weight down without compromising optical quality).īuild quality is good for a plastic lens and moving parts are acceptably tight. Polycarbonate plastic has been used as the major construction material in the body of the lens to minimise weight cost-effectively. Super Spectra coatings control ghosting and flare by internal reflections. The built-in optical image stabiliser claims to give up to four f-stops of shutter speed advantage. Optical components consist of 12 elements arranged in 10 groups, with one ultra-low dispersion (UD) element in the front group to suppress secondary chromatic aberrations and minimise coloured fringing. It’s a fairly slow lens – and this is apparent in the viewfinder when you’re shooting. On the EOS 400D and 40D cameras we used for our tests, its focal length range is equivalent to 88-400mm on a 35mm camera. Canon’s new EF-S 55-250mm f/4.0-5.6 IS is designed specifically for cameras with ‘APS-C’ sized sensors and combines light weight with a very low price tag for an optically-stabilised lens.
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