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.
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.