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Tamron SP AF 20-40 mm f/2.7-3.5 Aspherical (IF)

Manufacturer Tamron
Model SP AF 20-40 mm f/2.7-3.5 Aspherical (IF)
Lens style Wide angle zoom
Focal length 20 - 40 mm
Maximum aperture f/2.7 - 3.5
Angle of view 95 - 57 o
Closest focusing distance 0.5 m
Maximum magnification
Minimum aperture 22
Number of diaphragm blades 6
Auto focus type AF
Lens Construction 15 elements / 12 groups
Filter diameter 77 mm
Macro No
Available mounts Canon EF
Nikon F
Dimensions 81 x 81.5 mm
Weight 525 g
Additional information
Average rating (2 owners reviews)
Build quality
Optical quality
Value for money


3.83 Average
Owners reviews (2)
  1. Tomcam
    Tomcam 27 August 2021, 16:22
    Build quality
    Optical quality
    Value for money


    IP 91.21.x.x
    Owner since: 1 year
    Price: €70-
    User profile: Semipro

    Cons: A bit soft wide open, AF not the fastest (unnnecessary with wide-angles), heavier than comparable Sigma 17-35/2.8-4.

    Pros: Stopped down slightly performance becomes convincing and makes this Tamron a very versatile, not too big, rugged lens with high optical quality.

    Summary: A very good performer for a low price (like its brothers SP 28-105/2.8 and 200-400/5.6 LD), but rather rare.

  2. Propagandalf
    Propagandalf 15 August 2012, 14:18
    Build quality
    Optical quality
    Value for money


    IP 80.149.x.x
    Owner since: 6 months
    Price: 95 Euros
    User profile: Amateur

    Cons: - very Vulnerable to flares - very low optical performance completely open (just gets usable at f/4) - is vignetting much - strong distortion at 20mm wide open

    Pros: - metal construction - front lens doesn't rotate while focusing - cheap fullframe 20mm wideangle !

    Summary: I use this lens on my Nikon D700. Compared to other Nikon Lenses it delivers very different colors than Nikkor Lenses. Personally, I love the way this lens renders blue and green tones.

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