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Category Archives: Lenses and Optics

Measuring Lens Variance

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Warning: This is a Geek Level 3 article. If you aren't into that kind of thing, go take some pictures. I've been writing and discussing the copy-to-copy variation that inevitably occurs in lenses since 2008. (1,2,3,4) Many people don't want to hear about it. Manufacturers don't want to acknowledge some of their lenses aren't quite as [...]

Just the Lenses: Tamron 15-30mm f/2.8

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Our Just the Lenses posts are optical tests where we compare various lenses on the optical bench. Unlike DxO or Imatest test results, no cameras are involved, eliminating one of the major variables. It's particularly useful when we're looking at third-party lenses that can be used on various cameras. It's hard to extrapolate the results of a [...]