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Comments about Tamron 23FM12LL 2/3 12mm F/1.8 High Resolution C-Mount Lens with Lock:
We aimed to use the Tamron for high quality computer vision applications. It performed admirably, BUT only at the image centre. Due to the small lens size the radial distortion affected quality as close as 100mm away from the principal point. Rather going to use a $ Ricoh...you get what you pay for when it comes to lenses.