Canon EF-S 55-250/4,0-5,6 IS

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Canon EF-S 55-250/4,0-5,6 IS. Populärt telezoomobjektiv från Canon på 55-250 mm. Lanserat 2007.
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    Technically the Canon EF-S 55-250mm f/4-5.6 IS is a tiny lens with a great performance
    potential. The resolution is very good across the range. Chromatic aberrations are
    basically a non-issue. The level of distortions remains moderate. The most obvious flaw
    is, unsurprisingly, vignetting at large apertures. The build quality is fine for a lens
    in this class and it is one step up from the EF-S 18-55mm f/3.5-5.6 IS that we've seen
    here recently. Regarding the target market you may surely forgive the plastic mount.
    The AF (micro-) motor is pretty fast and silent. So's everything cool here ? Well, the
    AF accuracy didn't really convince in the field - specifically at the wide-end
    of the zoom range - but to be fair this is much better on an EOS 40D (e.g.) with its
    improved AF capabilities. I had some trouble with the image stabilizer in the field
    but according to early reader feedback this impression seems to be an exception to the
    rule. If so the EF-S 55-250mm f/4-5.6 IS has certainly the potential to be another
    hot seller.

  • The Canon EF-S 55-250mm f/4-5.6 IS is a tiny tele lens with a comparatively impressive performance potential. The resolution is very good across the range. Chromatic aberrations are almost a non-issue in field conditions. The level of distortions remains moderate. The most obvious flaw is, unsurprisingly, vignetting at large apertures. The build quality is fine for a lens in this class and it is one step up from the EF-S 18-55mm f/3.5-5.6 IS that we've seen here recently. Regarding the target market you may surely forgive the plastic mount. The AF (micro-) motor is pretty fast and silent and when used on the EOS 50D the focus accuracy is also spot on (it wasn't on the old EOS 350D though). The image stabilizer works are designed although probably not as good as specified for us average coffee junkies.

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    Canon EF-S 55-250 mm f/4-5.6 IS

    Pros

    • light weight and compact size
    • good picture resolution in the middle as well as at the corner of the frame
    • not very problematic chromatic aberration
    • good performance against bright light
    • well controlled coma
    • reasonable autofocus performance
    • image stabilization
    • reasonable price

    Cons

    • slight focal plane tilt which results in small, however measurable, differences in
    • noticeable astigmatism
    • relatively large vignetting for all focal lengths
    • too much plastic in its body

    8 år sedan