Reviews and Problems with Tamron SP AF90mm F/2.8 Di MACRO1:1 Model 272E
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Value for money 10
Overall quality 8
Build quality 7
Tamron AF 90mm f/2.8 SP Di macro (Pentax) - Review / Lab Test Report
31 October 2008
Conclusion: The Tamron AF 90mm f/2.8 SP Di is an excellent lens without significant flaws and it is at least as good if not even slightly better than its more expensive native Pentax counterpart. The resolution figures are impressively high, vignetting is marginal and distortions are non-existent. There're hints of lateral and longitudinal CAs but that's nothing out of the ordinary here.
Tamron AF 90mm f/2.8 SP Di macro (Nikon mount) - Review / Lab Test Report
31 October 2008
Conclusion: The Tamron AF 90mm f/2.8 SP Di is a superb lens without any significant flaws and it's easily as good as the corresponding (classic) Micro-Nikkor - the resolution figures are extremely high, vignetting is marginal, CAs are low and distortions are non-existent. The build quality may be slightly inferior in comparison to the Nikkor but then the price tag is also substantially lower so the verdict can only be - HIGHLY recommended!
Excerpt: With 10 elements in 9 groups, it's worth noting there's no internal AF motor so mounting it on a Nikon D3100, D5100 or similar which doesn't have an in-built AF motor will limit you to using it manual focus only. Unlike Tamron's 60mm f/2 macro, this lens doesn't have an internal focusing system, so the front element extends by 61mm when shooting at the full 1:1 ratio, but the front element doesn't rotate, so it's suitable to use with filters.