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6.9 out of 10

Sigma APO 135-400mm F4.5-5.6 DG

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Reviews and Problems with Sigma APO 135-400mm F4.5-5.6 DG

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REVIEW: Sigma 135-400mm f/4.5-5.6 DG Aspherical

5 April 2006
  • Conclusion: This lens is lightweight for it’s pulling power although still fairly well made and including a metal lens mount. The lightness makes it a little harder to keep still but when it is well held it performs nicely for its price. Well presented, with case and hood included, it is good value for money. If you need this kind of reach with an adequate AF performance but don’t want to dig deep enough for faster glass and sonic motors, this one will serve you well.
  • Pros: Good value for a good reach lens, Well-controlled distortions and aberrations, Good AF speed and accuracy for a non-sonic motor, Light weight a bonus for carrying
  • Cons: Resolution not stunning (although reasonable for class), Light weight a disadvantage for keeping still.
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Overall 6
Value for money 6
Overall quality 5
Build quality 6

Sigma AF 135-400mm f/4.5-5.6 APO Aspherical RF - Review / Test Report

5 April 2006
  • Conclusion: The Sigma AF 135-400mm f/4.5-5.6 APO Aspherical RF is not a perfect lens nor can you expect that a budget lens reaches high end quality levels. Nonetheless it is capable to provide very decent results especially in the 135-300mm range. At 400mm @ f/5.6 the quality is quite soft but from f/8 and up the quality is very respectable. The distortion characteristic is almost perfect and vignetting isn't really field relevant on an APS-C DSLR.
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