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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 (3 owners reviews)
Build quality
Optical quality
Value for money


4.22 Good
Owners reviews (3)
  1. Spirit Vision Photography
    Spirit Vision Photography 31 August 2022, 18:30
    Build quality
    Optical quality
    Value for money


    IP 52.94.x.x
    Owner since: more than 10 years
    User profile: Professional

    Cons: Lens flare is possible without lens hood when shooting into a light source.Not as bad as everyone says it to be.

    Pros: Well built. Very good optical quality.

    Summary: There are two versions. Optically they are identical, the difference between the two is cosmetics. I have and use both versions. This lens is well built. Optically it is very good too. It delivers better results than some primes in this range. The results on my 24mp body are quite good. I can highly recommend this lens!

  2. 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.

  3. 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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