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The performance of the Canon EF 70-300mm f/4-5.6 USM IS came as a total surprise. Unlike its
predecessor the lens is capable to produce a very high performance throughout the zoom range
without the significant drop in quality at 300mm typical for most consumer grade lenses in
this range. It seems as if the new UD element helps to lift the optical quality significantly.
Distortions, CAs as well as vignetting are also very respectable. So in terms of optical quality
the EF 70-300mm IS can be almost described as a hidden Canon L lens. As much as it may promise
here its build quality remains in line to what you can expect from a consumer grade lens and the
small max. aperture is limiting its scope specifically regarding portraits where you seek
for a pronounced fore-/background blurr only possible via large apertures (f/2.8 and larger).
However, if you're looking for a very good, light-weight tele zoom e.g. for travel photography
this lens should be high on your shopping list.
The Canon EF 70-300mm f/4-5.6 USM IS is a decent performer and a great value offer. It is capable of delivering
superb results at 70mm (for a slow speed lens) and it's still pretty good at 200mm and even 300mm. The vignetting
is comparatively moderate even at max aperture. Lateral CAs are quite well controlled. The amount of distortion
is about average between 70mm and 200mm but at 300mm the rather heavy amount of pincushion distortion can be
disturbing in some situations (e.g. architecture photography). The build quality is about typical for a consumer lens
but the rotating front element seems a little dated by now. You won't classify the 70-300mm IS as an AF speed demon
but it's reasonably fast compared to similar tele zoom lenses with a conventional AF motor. However, it's one of the
slower AF lenses in the native Canon lineup.
Inget betygCanon EF 70-300 mm f/4-5.6 IS USM
- very good image resolution in the center of the frame
- good image quality on the edges of the frame (except for the area
- well corrected chromatic aberration
- small distortion
- well corrected astigmatism
- vignetting almost completely absent
- efficient stabilization
- the image resolution for 300 mm could be better
- weak against bright light
- autofocus, which could be described with one word - disaster